Here are some extracts from the Riverside Desktop Poem and the three Bates' letters, that bleed into the Confession Letter.
[1] SICK OF LIVING/UNWILLING TO DIE  [2] ALL OVER HER NEW DRESS  [3] SHE WONT DIE THIS TIME  [4] JUST WAIT TILL NEXT TIME  [5] SHE HAD TO DIE  [6] BATES HAD TO DIE  [7] THERE WILL BE MORE.

Despite the Riverside communications not being in the public domain prior to November 1968 (only small parts of the Confession Letter were), the author of the typed Confession Letter carried wording similar to the Riverside Desktop Poem and Bates' letters. The wording "to die" featured in all three communications [1] "She/Bates had to die" [2] "I said it was about time for her to die" [3] "Sick of living/unwilling to die" (but "to die" or "die" never featured in any Zodiac communications). The Riverside Desktop Poem stated "over her new dress", whereas the Confession letter stated "over her mouth". The variation of the word "unwilling" in the Riverside Desktop Poem can been seen twice in the Confession Letter in "willing" and "willingly" (expressed as "unwilling to" die, she went "very willingly" and "willing to" talk to me). The Bates' letter thrice stated "there will be more", with the Confession Letter threatening "maybe she will be the beautiful blond". The Riverside Desktop Poem stated "she wont die this time" and "just wait till next time", whereas the Confession Letter stated "I said it was about time. She asked me about time for what. I said it was about time to die". The Confession Letter stated "I am not sick", in direct contrast to the Riverside Desktop Poem which declared "sick of living". The Confession letter stated "I waited for her in the library", whereas the Riverside Desktop Poem threatened "Just wait till next time". To a much lesser extent, the Riverside Desktop Poem refers to a knife by opening with "cut, clean, if red, clean", with the Confession letter also referring to the same action, by stating "I finished the job out cutting her throat". 

There is a strong possibility that all three Riverside communications were one author. In 2016 investigators received a communication from an individual in San Bernardino who claimed that he had authored the three Bates letters on April 30th 1967, stating he was a troubled teenager at the time he sent the trinity of malicious handwritten letters to the Riverside Police Department, Riverside Press-Enterprise newspaper and Joseph Bates. If he didn't also claim to have written the Riverside Desktop Poem and Confession Letter, I doubt he was responsible for any.

If the wording of the Confession letter had been withheld from the newspapers in 1966, it would make any similarities between the Confession letter and Riverside Desktop Poem more significant. It appears that the majority of the text from the Confession letter wasn't released until November 1968, when it was published in the Press-Enterprise newspaper. Here is a brief section from a previous article:making a comparison between the Desktop Poem and Confession letter, both of which begin with a title.

​The title of the Desktop Poem was "Sick of living/unwilling to die".  When we look at the Confession letter the author types two sentences carrying the similar wording of "She was then very willing to talk to me" and "she went very willingly".  The Confession letter author also typed "I am not sick. I am insane". In other words, the Desktop Poem title is embedded in the story of the Confession letter. The Desktop Poem concludes with the wording "She won't die, this time someone'll find her. Just wait till next time", suggestive of an impending death - and mirrored in the Confession letter when the author types the word "time" on a further three occasions and utilizes the word "die" in the same string of wording, by stating "When we were away from the library walking, I said it was about time. She asked me "about time for what". I said it was about time for her to die".   

Is this enough correlation to point to one author of the Riverside Desktop Poem and Confession letter? And could the author of the Bates letters (whoever that may be) be responsible for the two previous communications. Recently, the Riverside Police Department have stated that somebody contacted them via a letter in 2016 claiming responsibilty for the three Bates letters postmarked April 30th 1967. "The author apologized for sending the letters and said it was a sick joke. The author admitted that he was not the Zodiac killer or the killer of Cheri Jo Bates and was just looking for attention". But was the individual who made this admission in 2016 telling the truth? Despite the three Bates letters containing only eight words, they managed to continue the theme of the previous two communications in 1966. The Desktop Poem was titled "Sick of living/unwilling to die". The Confession letter harbored the wording "I said it was about time for her to die" (meaning Bates had to die). Then, five months later, the three Bates letters contained the wording "Bates had to die there will be more" and "She had to die there will be more". In addition, all three communications ended with the threat of further murder. The ending of each carried the wording "Just wait till next time", "I am stalking your girls now" and "There will be more". It is also noteworthy that the Zodiac Killer wrote the wording "to die", "die" or "died" in any of his textual communications spanning eighteen years.

Here is some additional information regarding the Confession letter. Before the development of photographic copiers, a carbon copy was the under-copy of a typed or written document placed over carbon paper and the under-copy sheet itself (not to be confused with the carbon print family of photographic reproduction processes). When copies of business letters were so produced, it was customary to use the acronym "CC" or "cc" before a colon and below the writer's signature to inform the principal recipient that carbon copies had been made and distributed to the parties listed after the colon. With the advent of word processors and e-mail, "cc" is used as a merely formal indication of the distribution of letters to secondary recipients. A sheet of carbon paper is placed between two or more sheets of paper. The pressure applied by the writing implement (pen, pencil, typewriter or impact printer) to the top sheet causes pigment from the carbon paper to reproduce the similar mark on the copy sheet(s). More than one copy can be made by stacking several sheets with carbon paper between each pair. Four or five copies is a practical limit. The top sheet is the original and each of the additional sheets is called a carbon copy. A sheet of carbon paper is placed between two or more sheets of paper. The pressure applied by the writing implement (pen, pencil, typewriter or impact printer) to the top sheet causes pigment from the carbon paper to reproduce the similar mark on the copy sheet(s). More than one copy can be made by stacking several sheets with carbon paper between each pair. Four or five copies is a practical limit. The top sheet is the original and each of the additional sheets is called a carbon copy. Wikipedia. .

Robert Graysmith in Zodiac Unmasked stated "November 29, 1966. Two carbon copies of a "confession" letter sent to the press and Riverside Police. Zodiac typed on a sandwich of Teletype paper and carbon paper and mailed the faintest, the fourth and fifth impressions. The original typed top page was never sent". Ordinarily it is wise to double check anything Robert Graysmith claimed, however, in this instance his claims appear to concur with Wikipedia that four or five copies is perfectly feasible in this instance. The fact that the Confession letter was cut at the top and bottom suggests the paper used was taken from a Teletype roll

There is a reasonable argument to be had, that the Confession letter mailed on November 29th 1966 was created by the same author as the Riverside Desktop Poem, with both being created at around the same time by somebody who had access to the Riverside library photocopier and the desktops themselves - possibly a young student who lived in Riverside and attended the college. The author of the Riverside Desktop Poem may have split his poem into two parts: The first part reminiscing in the present tense about the April 1965 attempted murder of a young female student on the Riverside City College campus, who narrowly escaped death after being stabbed by Rolland Taft. A newspaper article entitled "Clean-cut Youth Sought In Stabbing" was released shortly after the attack, that seemed to mirror the opening two words of the Riverside Desktop Poem, and detailed on Ricardo Gomez's MK Zodiac website. The first part of the poem was correct when it asserted "she won't die, this time someone'll find her". The young woman fled the attack and sought help from a nearby residence and was rushed to hospital. The second part of the poem reminisced in the present tense that the next woman would not be so lucky, by stating "Just wait till next time. r h." That person may have been Cheri Jo Bates, brutally stabbed on October 30th 1966 close to the Riverside City College library annex and found on Halloween morning. The newspapers detailed that screams were heard on the night of October 30th 1966 but that her body was discovered the morning of Halloween, so the author of the Desktop Poem may have been using this date when he added Riverside, Halloween at the end of the poem.   

If the wording of the Confession letter had been withheld from the newspapers in 1966, it would make any similarities between the Confession letter and Riverside Desktop Poem more significant. It appears that the majority of the text from the Confession letter wasn't released until November 1968, when it was published in the Press-Enterprise newspaper. Let us make a comparison between the Desktop Poem and Confession letter, both of which begin with a title. The title of the Desktop Poem was "Sick of living/unwilling to die".  When we look at the Confession letter the author types two sentences carrying the similar wording of "She was then very willing to talk to me" and "she went very willingly".  The Confession letter author also typed "I am not sick. I am insane". In other words, the Desktop Poem title is embedded in the story of the Confession letter. The Desktop Poem concludes with the wording "She won't die, this time someone'll find her. Just wait till next time", suggestive of an impending death - and mirrored in the Confession letter when the author types the word "time" on a further three occasions and utilizes the word "die" in the same string of wording, by stating "When we were away from the library walking, I said it was about time. She asked me "about time for what". I said it was about time for her to die".   

There is every chance that the author of these two communications was a young prankster connected to the Riverside City College campus and library, who had knowledge of both attacks in 1965 and 1966, and gleaned everything about these two young women from the newspapers. The connection to both these attacks can be reasoned in the Riverside Desktop Poem, along with the claim of one author being responsible for both communications by the very wording they utilized.   

Rolland Taft was sentenced to 6 months to 20 years for the attempted murder of a young female student on the Riverside College campus in April 1965. She attended evening classes as a student of the college. Taft served 2 1/2 years and was released in 1968. The female victim suffered severe knife wounds in the attack but was able to escape and seek help from her neighbors. On April 17th 1965 The Press-Enterprise ran an article about the attempted murder, running with the headline Clean-Cut Youth Sought in Stabbing. This headline is extremely reminiscent of how the poem on the Riverside Desktop Poem began, with "clean" and "cut" used in each instance. So was the author of the Riverside Desktop Poem familiar with this crime, causing him to reminisce about it as he constructed the poem on the plywood desk?

If the author of the Desktop Poem was referring to this attempted murder, then he was clearly of the opinion that the young girl was stabbed while wearing a new red dress. The poem read "blood, spurting, dripping, spilling; all over her new dress. Oh well, it was red anyway".  The author was referring to past events, fully aware that she didn't die after the attack because someone found her bleeding outside their house and sought help.

Cragle, a regular poster on both forums, is attempting to locate some historic newspaper articles describing the attempted murder in the hope there is mention of the girl's attire that evening. If no newspaper articles or media coverage mentioned her new red dress, it may suggest that the author of the Desktop Poem knew Rolland Taft and the details surrounding the attack - or he knew the young victim and knew first-hand what she was wearing on that fateful evening in 1965. This could indicate that he attended the Riverside City College as a fellow student, with access to the plywood desk in order to write the poem. The most crucial aspect of the poem is the final section, which carries the foreboding message of "She won't die. This time someone'll find her. Just wait till next time. rh". In other words, this girl didn't die by knife, but the next girl will. The author may have written this poem prior to the murder of Cheri Jo Bates on October 30th 1966, with the rh at the foot of the poem a place and time prediction  - that of Cheri Jo Bates in Riverside on Halloween. The murderer of Cheri Jo Bates may have been attempting to lure her to a secondary location to kill her but her valiant struggle against her attacker may have thwarted his plans and resulted in the Halloween prediction falling short by 75 minutes.

The impressionable author of the Riverside Desktop Poem could conceivably have been a student of the college, who was inspired by the attempted murder of Miss Atwood. He could also have known the young woman and studied alongside her. Wherever she had been that fateful evening on April 13th 1965, possibly wearing a brand new red dress, he may have been present. This would be the only reasonable conclusion had she been wearing a red dress and these details were not mentioned in any media coverage (and he didn't know Rolland Taft). If the author of the Desktop Poem was the author of The Confession letter, then the mention of "brush offs" in a seemingly immature typed letter, could place the person responsible for both in the age range of Miss Atwood (19) and Miss Bates (18)- and very likely somebody connected to the Riverside City College. 

Not wanting to just copy the entirety of Ricardo Gomez's article, I suggest you take a look at the article entitled "The Taft Theory" that I believe is the true inspiration for the Riverside Desktop Poem discovered on December 1966. Whether the writing on the desktop was the Zodiac Killer or not, we do know that the writings or thoughts of people are often inspired by previous experiences - and in the case of the Zodiac Killer, things he read in the newspaper. In brief, Rolland Taft was arrested and jailed for the stabbing of a Riverside woman at Riverside City College on April 13th 1965, subsequently reported in The Press and Daily Enterprise on April 17th 1965 under the title Clean-cut Youth Sought For Stabbing and possibly the inspiration for the beginning of the poem and its overall contents. See Ricardo Gomez's follow-up article here.

Despite the Riverside Desktop Poem being diacovered in December 1966, it is unknown when this poem was written. I highly doubt it was authored shortly after the story of the stabbing broke on April 17th 1965 because of its contents on the final line, but suspect it was etched into the plywood desk with a blue ballpoint pen shortly before the murder of Cheri Jo Bates on October 30th 1966. The newspaper story of Rolland Taft and the stabbing of the young woman at Riverside City College must have been vividly remembered by the Desktop Poem author, which inspired him to create the morbid offering. The writing on the desktop is telling regarding the April 13th 1965 attack, because the poem is reflective upon past events such as "she won't die, this time someone'll find her". The young woman did seek help and ultimately survived her brutal attack. The notion of a copycat killer is nothing new, and it appears that the author of the Desktop Poem may have been one such person.

It is highly unlikely that the author of the Desktop Poem, had they been reminiscing about the stabbing of the young woman and subsequent newspaper coverage, would have been someone other than a Riverside resident at the time of both the newspaper coverage and the authorship of the poem. If this was the Zodiac Killer and he was resident in the Bay Area in 1965 and 1966, then his knowledge of this crime would be slim at best. This person had to have knowledge of the young woman's stabbing a year earlier and must have had access to the Riverside City College library, thereby spanning an extended period. So may have lived locally.  

The reason for believing the Desktop Poem was authored just prior to the murder of Cheri Jo Bates on October 30th 1966, is not only the reflective tone of the writing, but the ominous projection forward of "just wait till next time" followed by two inscribed alphabetical letters. When you are proclaiming a further attack in similar fashion to the stabbing of the young woman and immediately following it with "rh", one cannot be too surprised when a further knife attack results in the death of another young woman on Halloween eve in Riverside. Hence the attribution of "rh" meaning "riverside halloween". This was the promise of "next time". 

Remember, the author of the Confession letter had suggested he was trying to lure Cheri Jo Bates into his vehicle. This could indicate that he had planned to murder Cheri Jo Bates later than the believed 10:30 pm, when screams emanated from the nearby alleyway - likely on Halloween Day itself - but something clearly had resulted in the unplanned struggle in the alleyway and her 'premature' murder from the perspective of the killer. Had he achieved his objective in luring the young woman into his vehicle, the likely prediction of the Riverside Desktop Poem would have come true. "Just wait till next time. riverside, halloween".

The choice of present tense in writing "she won't die, this time someone'll find her" rather than "she didn't die, last time someone found her", is indicative of the author reflecting as opposed to claiming the previous knife attack. That was because Rolland Taft was incarcerated shortly after the April 13th 1965 attack and was still in jail at the time of the Cheri Jo Bates murder. The author knew this fact - and why he made no direct claim to the attack on the young woman by using the past tense.

For those believing the Riverside Desktop Poem was authored by the Zodiac Killer, may now be able to place the Bay Area murderer in Riverside as early as 1965, and quite possibly up to April 30th 1967 when the three Bates letters promising even more killing arrived. The Zodiac Killer was an avid reader of the newspapers, often inspired by articles not only about his murders, but other attacks as well. Was this the case during 1965 and 1966 in Riverside?  

Some of the questioned Zodiac communications address certain individuals using the lower case format, and the March 13th 1971 'Los Angeles' letter refers to Riverside in the same fashion: "I do have to give them credit for stumbling across my riverside activity, but they are only finding the easy ones, there are a hell of a lot more down there". The Riverside Desktop Poem, written sometime in 1966 and believed to have been signed off with the author's initials, also featured two lower case letters. The clue to "rh" may lie in the poem itself and in the first correspondence by the Zodiac Killer on July 31st 1969 - assuming you believe a connection between Riverside and the Bay Area murders. That is because there is a real possibility the Riverside Desktop Poem was authored prior to the murder of Cheri Jo Bates on October 30th 1966. If you believe that Cheri Jo Bates was stalked surreptitiously in the weeks or months before her death, then the Desktop Poem is the precursor or warning, and the Confession letter is the completion of that threat. 

If we look at the wording on the Riverside Desktop Poem (below) from the standpoint of somebody stalking Cheri Jo Bates, then it is perfectly conceivable that at some point in time the wannabe killer has noticed the young woman wearing a red dress and fantasized about making her pay for the "perceived brush-offs" he has endured. But what is noticeable, is that the author states "she won't die this time, someone'll find her". If the young woman was to be stabbed, why would someone necessarily find her? If his mind is seeing his fantasy in the present during school hours and in the context of a busy Riverside City College campus, then one could easily see how she could be rescued and survive. However, in the next line he is projecting his mind to the future by stating "just wait till next time". The only way "next time" could conceivably have a different outcome, is if he lures Cheri Jo Bates away from the Riverside City College campus - and this is exactly what he said he was attempting to do when he typed the November 29th 1966 Confession letter, thirty days after Cheri Jo Bates' murder. He stated "I then offered to help. She was then very willing to talk to me. I told her that my car was down the street and that I would give her a lift home".  

If the murderer of Cheri Jo Bates had made a promise to seek her out "next time" in the Riverside Desktop Poem, and had some connection to the college, or was in her near or outer circle, is it really realistic he would give his true initials at the foot of the Desktop Poem to give law enforcement a helping hand? On the other hand, if they weren't really his initials and he had just placed two random letters together, then it is a rather pointless exercise. The Zodiac Killer wrote "riverside" in the 1971 'Los Angeles' letter and "halloween"/"Halloween" in the questioned 1987 correspondence, showing yet again his ability to ignore the upper case form of these titles. It is these two words that may give us the meaning to the "rh" at the foot of the Desktop Poem. The poem indicated the necessity of the killer to separate Cheri Jo Bates from the college campus so somebody wouldn't find her in time, thereby resulting in her death. Had he achieved such an objective, then her death may very well have occurred past the midnight of October 30th, rather than around 10:30 pm when screams were heard emanating from the campus alleyway. He was ultimately thwarted by Cheri Jo Bates, who likely fought back vigorously when she was being coerced towards his vehicle. The killer ultimately boasted that this was not the case by stating "I said it was about time. She asked me 'about time for what'. I said it was about time for her to die".  This was clearly a line pulled straight from his imagination, to give the impression he was in complete control throughout. Had Cheri Jo Bates not fought valiantly against her abduction, then the prophecy of "rh" would have been realized: "Just wait till next time, riverside halloween".

On July 31st 1969, the Zodiac Killer wrote "If you do not print this cipher by the afternoon of Fry.1st of Aug 69, I will go on a kill ram-Page Fry. night. I will cruse around all weekend killing lone people in the night then move on to kill again, until I end up with a dozen people over the weekend". The Bay Area murderer was always promising more bloodshed in the future - and the Riverside Desktop Poem was no different. But on that occasion he gave us the exact time and place.    

Without a DNA or fingerprint connection apparently linking Riverside and the Zodiac Killer, many have tried to link the two through his correspondence. Was the Zodiac Killer responsible for the murder of Cheri Jo Bates in Riverside on October 30th 1966, and if so, was he a well-read individual with connections to the campus library?

David Oranchak of ZodiacKillerCiphers highlighted the text of Edward Hyde, Earl of Clarendon, present in the 408 Cipher, in his article entitled 'Throw the book at him, Part 3'. The section of text is from a book called 'The life of Edward, Earl of Clarendon, lord high chancellor of England: Volume 2': ​Forty-six consecutive letters from this text corresponds with a section of the 408 cipher. Dave Oranchak, the foremost expert on the Zodiac ciphers, commented on this "So, only one piece of text, from a vast collection of eleven billion pieces of text, fit into this chunk of cipher text. A one in eleven billion chance seems to suggest some significance. But don’t be fooled by this. Just because this rare event occurred, doesn’t mean it is anything more than a simple coincidence. If we didn’t already know the real solution to the 408, how do we know that this chunk of old and obscure text isn’t the correct solution?" I wanted to validate or refute whether this was a simple coincidence or not by examining whether the works of Edward, Earl of Clarendon featured anywhere else in Zodiac or Riverside correspondence. One wouldn't envisage many American criminals using the writings of a seventeenth century English statesman to form part of their serial murder exploits, and certainly not without access to a comprehensive library of books.

This is when I noticed another piece of obscure text from Edward, Earl of Clarendon and flew back to the last piece of notable text from the presumed Zodiac Killer on the Riverside desktop - the title of which was "sick of living/unwilling to die." One of Edward Hyde's quotes was “They who are most weary of life, and yet are most unwilling to die, are such who have lived to no purpose, — who have rather breathed than lived.” http://izquotes.com/quote/385232. ​Although not perfect, I couldn't help wondering if the Zodiac Killer was recalling from memory, as he did his paraphrasing of 'The Mikado'. Had he plagiarized "weary of life, unwilling to die" to "sick of living, unwilling to die," and would then later hide another section of Edward Hyde's text in the 408 cipher, as a form of link between the murder in Riverside and the Bay Area.

Edward Hyde, Earl of Clarendon was also an avid user of ciphers as revealed here in literary manuscripts; 
"Naturally a substantial portion of Clarendon's surviving manuscripts comprises his personal correspondence — both letters received by him from numerous correspondents and his own letters, written or signed by him, whether drafts, retained copies, or the letters actually sent. Among many notable examples are his letters written in August 1646 to William, Lord Widdrington, and to Sir John Berkeley, announcing the beginnings of his History of the Rebellion, and the letter he wrote on 12 November 1646, to Sir Edward Nicholas, describing his plan for the work and stating that he had already completed sixty sheets of it. Some of his letters, particularly those dating from the Civil War period, are wholly or partly in cipher or make use of pseudonyms in both salutations and signatures. The codes to sixteen such ciphers used by the Royalists are written out in Bodleian, MS Clarendon 94, and see also British Library,"

However, are there any alternatives to Edward Hyde - someone that possibly connects the 'Confession' letter and Riverside 'Desktop Poem' together, using the title of each communication. I have always believed the Zodiac Killer was driven by some form of warped religion - one that drove him to the confession box after each crime and manifested in the form of letters mailed to the newspapers and police. Using the Riverside library as our primary focus once again, did the works of an early Christian theologian and philosopher influence the writings of Zodiac?
 
'Peter A Fiore concludes that John Milton (an English poet, author of Paradise Lost, polemicist, man of letters, and civil servant for the Commonwealth of England) like many humanists, Christian philosophers, Reformers, and theologians of every variety in the early seventeenth century, drew widely from Augustine and that such indebtedness gave a richer and fuller theological dimension to his epic of lost paradise and enhanced the meaning of the poem.' 
link  The Augustine he is referring to is St Augustine of Hippo (13 November 354 - 28 August 430), a Roman African, Christian theologian, whose writings influenced the development of Western Christianity and Western Philosophy. His work was translated by many individuals, but here are a few examples:

1] "Now is not the time for asking questions but for confessing to You. I was wretched, just as every mortal soul is wretched who is bound to the friendship of mortals. We are torn to pieces when we lose them, and so become aware of how wretched we were, even before we lost them. This is the way it was with me. I wept bitterly, and found rest only by weeping. I was so wretched that I held that life of wretchedness to be more dear to me than the friend for whom I wept. Even though I wanted to change it, I was more unwilling to lose it than I had been to lose my friend. Actually, I doubt that I would be willing to lose it even for him, as it is said of Orestes and Pylades, if that is true, that they would have gladly died for each other, or both died at the same time, rather than living part from each other. But I had begun to be afflicted with a strange kind of feeling, different from theirs. I cannot explain it, but I was tired of living and yet, I was afraid to die." link.​

2] "I do not know whether I would have been willing to die for him in the way that Orestes and Pylades, if the story is true, were willing to die together for each other. And yet a strange feeling had grown in me, and it was very different from theirs; I was sick and tired of living but I was too afraid to die." link.

​3] "But in me there was an odd kind of feeling, the exact opposite of theirs, for I was at once utterly weary of life and in great fear of death." link.
​
4] "I was at the same time thoroughly tired of living and extremely frightened of dying.”
link.
​
Was this a case of the Zodiac Killer recalling the literary work of another, as he did with Gilbert and Sullivan's The Mikado, but paraphrasing it. However, in this instance, the author chose sick of living/unwilling to die as his title of the 'Desktop Poem'. On its own, this connection could appear a little unconvincing, but the author of the Riverside 'Desktop Poem' may have mailed correspondence to the Riverside Homicide Detail and Riverside Press Enterprise on November 29th 1966, in the form of letters entitled 'The Confession'.

Two weeks after the October 30th 1966 murder of Cheri Jo Bates, the Riverside Police staged a library reconstruction of the crime on November 13th 1966. The probable murderer then mailed the 'Confession' letters. St Augustine of Hippo wrote the Confessions (in which the above examples of text are contained), an autobiographical piece of work consisting of 13 books. "The Confessions of Saint Augustine in order to distinguish the book from other books with similar titles. Its original title was Confessions in Thirteen Books, and it was composed to be read out loud with each book being a complete unit. Confessions is generally considered one of Augustine's most important texts. It is widely seen as the first Western autobiography ever written, and was an influential model for Christian writers throughout the Middle Ages. Professor Henry Chadwick wrote that Confessions will "always rank among the great masterpieces of western literature." link.  St Augustine of Hippo was born on November 13th, the exact date of the library reconstruction. 

"The City of God Against the Pagans (Latin: De civitate Dei contra paganos), often called The City of God, is a book of Christian philosophy written in Latin by Augustine of Hippo in the early 5th century AD. The book was in response to allegations that Christianity brought about the decline of Rome and is considered one of Augustine's most important works, standing alongside The Confessions, The Enchiridion, On Christian Doctrine and On the Trinity. As a work of one of the most influential Church Fathers, The City of God is a cornerstone of Western thought, expounding on many profound questions of theology, such as the suffering of the righteous, the existence of evil, the conflict between free will and divine omniscience, and the doctrine of original sin. Shortly before Augustine's death, the Vandals, a Germanic tribe that had converted to Arianism, invaded Roman Africa. The Vandals besieged Hippo in the spring of 430, when Augustine entered his final illness. According to Possidius, one of the few miracles attributed to Augustine, the healing of an ill man, took place during the siege. According to Possidius, Augustine spent his final days in prayer and repentance, requesting that the penitential Psalms of David be hung on his walls so that he could read them. He directed that the library of the church in Hippo and all the books therein should be carefully preserved. He died on 28 August 430. Shortly after his death, the Vandals lifted the siege of Hippo, but they returned not long thereafter and burned the city. They destroyed all of it but Augustine's cathedral and library, which they left untouched."  Wikipedia.

​Was the murderer of Cheri Jo Bates somehow connected to the Riverside library, a well-read individual, who subtly introduced sections of text from St Augustine of Hippo into the titles of both the 'Riverside Desktop Poem' and 'The Confession' letter in order to give himself a feeling of superiority over the police and newspapers, as he would ultimately do several years later?

"SICK OF LIVING, UNWILLING TO DIE" 

The 'Confession' letter purportedly typed by the hand of Cheri Jo Bates' murderer delivered a sense of foreboding: "She is not the first and she will not be the last. I lay awake nights thinking about my next victim. Maybe she will be the beautiful blond that babysits near the little store and walks down the dark alley each evening about seven. Or maybe she will be the shapely blue eyed brownett that said no when I asked her for a date in high school. But maybe it will not be either....Yes I did make that call to you. It was just a warning. Beware...I am stalking your girls now." 
 
This was equally true of the Riverside Desktop Poem, discovered by a Janitor at Riverside City College in the December of 1966, after the murder of Cheri Jo Bates and after the 'Confession' letter, but in all probability was written before the October 30th 1966 murder. It gave a chilling prelude to what may transpire, what may be denied, but ultimately the threat of more to come: "Just wait till next time. rh."  If the Desktop Poem was written in the October of 1966 by the same mind who typed the 'Confession' letter, then it could be argued it was the prelude to the murder of Cheri Jo Bates, and equally argued as the first correspondence of the Zodiac Killer, if you believe a connection exists between the Bay Area and Riverside.    

The Zodiac Killer often ended his communications with an unbridled mockery of police and signed off many with a running victim total and the promise of more. The July 31st 1969 San Francisco Chronicle letter warned us of future murders "If you do not print this cipher by the afternoon of Fry.1st of Aug 69, I will go on a kill ram-Page Fry. night." The 'Bus Bomb' letter stated "up to the end of Oct I have killed 7 people". In the November 8th 'Dripping Pen' card he added the months of his alleged attacks, stating "Des, July, Aug, Sept, Oct = 7." The Halloween card is also believed by many to be a future threat towards Paul Avery. Could the initials rh be offering us something similar. The author of the Riverside Desktop Poem warned us of a "next time," then gave us the initials. Could the author have instructed us on the time and place of his next murder, much like the unconfirmed 'Albany' letter mailed on August 1st 1973.

What if we apply the same model to the Riverside Desktop Poem, where he signs off the poem with "Just wait till next time. rh". The Riverside Desktop Poem was discovered in the December of 1966. But it might very well have been written prior to the murder of Cheri Jo Bates on October 30th 1966, and the warning of "Just wait till next time. rh" was referring to the time and place of his next murder. Remember, the author of the Confession letter had suggested he was trying to lure Cheri Jo Bates into his vehicle. This may possibly indicate he had planned to murder Cheri Jo Bates later than the believed 10:30 pm, when screams emanated from the alleyway, likely on Halloween Day itself, but something clearly had resulted in the unplanned struggle in the alleyway and her 'premature' murder from the perspective of the killer. Had he achieved his objective in luring the young woman into his vehicle, the likely prediction of the Riverside Desktop Poem would have come true: "Just wait till next time. riverside, halloween." The author was giving us the area of the crime and the exact date. The Riverside Desktop Poem was the ode to murder, the 'Confession' letter was its completion. He may have planned the murder of the young woman on October 31st 1966, the day she was ultimately discovered by groundskeeper Cleophus Martin.   

​On March 13th 1971 the Zodiac Killer referenced his exploits in Riverside by 'complimenting' the police on connecting the murder of Cheri Jo Bates to him: "I do have to give them credit for stumbling across my riverside activity, but they are only finding the easy ones."  

In the aftermath of the Cheri Jo Bates murder the police made appeals to the public to be on the lookout for the murder weapon, described as a small knife: "An unrelenting search had been in progress for the murder weapon, and that Tuesday detectives used a metal detector (see right) in shrubbery adjacent to the murder scene in an effort to find the knife used by the slayer. Captain Cross revealed to the news media that the autopsy showed that the murder weapon was probably a pocket knife with a 3 inch blade or less. The broadcast and published information about the knife caused the police switchboard to be flooded with calls reporting knives of similar description being found all over the city of Riverside."  Was one of those callers the murderer, who did state in the 'Confession' letter "Yes, I did make that call to you." 

How many of these calls were followed up is hard to determine, but curiously on November 14th 1966, one day after the highly publicized library reconstruction, the police did get a call from a Riverside City College gardener: "That he had unearthed a hunting knife with his rake. The knife had apparently been buried near the murder scene. Detectives hurried to the campus and turned over the knife to the homicide detail. However, examination failed to show any evidence of dried blood on the knife blade. Also, its width did not compare with the incisions made by the stab wounds." Did the murderer of Cheri Jo Bates plant the hunting knife and make a call to police, which ultimately got lost in the myriad of calls flooding the switchboard, and consequently was not followed through? Or did the killer make contact with the Riverside City College gardener to volunteer this information, while viewing the unfolding police presence from a distance?
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The police had thoroughly searched the crime scene with metal detectors in the days after the murder, so it seems likely the knife was planted subsequent to their search by either the perpetrator or a misguided prankster. The planting of a larger hunting knife near the murder scene may have been another foreboding message by the killer, that "It was just a warning. Beware...I am stalking your girls now." Stalking them with a larger and more deadly knife. After all, he did claim that he "plunged the knife into her and it broke."

For many people, Cheri Jo Bates checked out her own library books. This being the case, we have approximately four hours in which her whereabouts are unexplained. Had she gone somewhere willingly, it is highly likely she traveled there by foot, having left her vehicle parked on Terracina Drive at about 6.15 pm.
Does this center the investigation close to the college campus?

The author of the 'Confession' letter was fond of referring to that "alley," when he stated "Maybe she will be the beautiful blond that babysits near the little store and walks down the dark alley each evening about seven" and "it just might save that girl in the alley." Was he referring to the alleyway in which Cheri Jo Bates was murdered, or some other alley in the vicinity of the Riverside City College campus? Somewhere he could monitor the comings and goings of young attractive women. If he was able to go unnoticed, without drawing suspicion to himself around the college campus the evening of October 30th 1966, had composed the Desktop Poem earlier that month, and had subsequently planted the knife near the crime scene, was this indicative of somebody who worked at, or frequented the college on a regular basis? Somebody who could travel within the confines of Riverside City College unchallenged and blend into the background. 
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The Timex watch discovered ten feet from the body of Cheri Jo Bates, apparently ripped off the wrist of the killer in the struggle, had white paint specks on its face. The Riverside City College was undergoing renovation at this point in time, so is this another small pointer. The attack on Cheri Jo Bates was fairly prolonged, evident by the wounds sustained by the young woman, inflicted on her in an alleyway bordered by two vacant properties. Is this yet further indication of prior knowledge to college affairs, that the killer was prepared to attack Cheri Jo Bates here, knowing that nobody resided within these properties. This again, reinforcing the idea that the murderer either worked within the college campus, or frequented it regularly. He would seemingly stick around until at least April 30th 1967, when three more virtually simultaneous communications were received from the alleged murderer, in similar fashion to the beginning of the Zodiac correspondence, just over two years later.   

Sometime in December 1966 the inside of a folding desktop revealed a morbid poem, discovered by a  janitor at the Riverside City College library. Just two months earlier, Cheri Jo Bates was found murdered in an alleyway beside the library on October 30th 1966, and a typed Confession letter was mailed, most likely by her killer, on November 29th 1966. The Riverside Desktop Poem began with the title "sick of living/unwilling to die." The rest of the poem can be viewed here.

Questioned Documents Examiner Sherwood Morrill, who validated much of the Zodiac communications, would verify this poem as having handwriting consistent with the Zodiac Killer. The fact this was discovered in the RCC library, the question arose as to the origin of the poem.

The Zodiac Killer seemed to draw inspiration from many sources of yesteryear, such as in the 408 Cipher, which contained the phrase "the most dangerous animal," believed to be referring to a short story 'The Most Dangerous Game' by Richard Connell, first published on January 19th 1924. The Mikado paraphrased in his Little List and Exorcist letters, first viewed by the paying public in 1885, and possibly Charlie Chan created by Earl Derr Biggers in 1919. His costumed appearance at Lake Berryessa and his use of words predominantly used by the British, made some people believe he may have been connected to the theater, in addition to being a well-read individual. The RCC library no doubt was well stocked and may likely have held the answer. This poem, apart from the very short Bates letters mailed on April 30th 1967, was effectively the preceding correspondence of any substance before the 408 cipher arrived in three parts to the San Francisco Chronicle, San Francisco Examiner and Vallejo Times-Herald  - mailed on July 31st 1969, some 2 1/2 years later. So can any connection be forged?

Edward Hyde, Earl of Clarendon, Lord High Chancellor of England, was an English statesman and historian, with his writings detailed here in a catalog of English literary manuscripts containing one important section: "Naturally a substantial portion of Clarendon's surviving manuscripts comprises his personal correspondence — both letters received by him from numerous correspondents and his own letters, written or signed by him, whether drafts, retained copies, or the letters actually sent. Among many notable examples are his letters written in August 1646 to William, Lord Widdrington, and to Sir John Berkeley, announcing the beginnings of his History of the Rebellion, and the letter he wrote on 12 November 1646, to Sir Edward Nicholas, describing his plan for the work and stating that he had already completed sixty sheets of it. Some of his letters, particularly those dating from the Civil War period, are wholly or partly in cipher or make use of pseudonyms in both salutations and signatures. The codes to sixteen such ciphers used by the Royalists are written out in Bodleian, MS Clarendon 94, and see also British Library".

​I noticed a very interesting article on Zodiac Killer Ciphers, highlighting the 408 cipher, entitled Throw the book at him, Part 3, which featured Edward Hyde, Earl of Clarendon and a section of his text from a book called The life of Edward, Earl of Clarendon, lord high chancellor of England: Volume 2. Dave Oranchak, the foremost expert on the Zodiac ciphers, wrote "So, only one piece of text, from a vast collection of eleven billion pieces of text, fit into this chunk of cipher text. A one in eleven billion chance seems to suggest some significance. But don’t be fooled by this. Just because this rare event occurred, doesn’t mean it is anything more than a simple coincidence. If we didn’t already know the real solution to the 408, how do we know that this chunk of old and obscure text isn’t the correct solution?" To read the entire article visit here.

This is when I noticed another piece of obscure text from Edward, Earl of Clarendon and flew back to the last piece of notable text from the presumed Zodiac Killer on the Riverside desktop, the title of which was "sick of living/unwilling to die". One of Edward Hyde's quotes was “They who are most weary of life, and yet are most unwilling to die, are such who have lived to no purpose, — who have rather breathed than lived.” http://izquotes.com/quote/385232. ​Although not perfect, I couldn't help wondering if the Zodiac Killer was recalling from memory as he did with The Mikado, taking "weary of life, unwilling to die" to "sick of living, unwilling to die," and then somehow incorporating another of Edward Hyde's quotes into the 408 cipher as a form of link between the two. However, as Dave Oranchak affirmed "Just because this rare event occurred, doesn’t mean it is anything more than a simple coincidence" - and may just prove the case that we are the "The Most Pattern-Seeking Animal of All". 

Here is the text from 'The life of Edward, Earl of Clarendon, lord high chancellor of England,' with the portion of text found in the 408 Cipher having been highlighted below. I am not sure whether the figure 239 was part of the original document, but character 239 in the 408 Cipher is part of this highlighted text and the start of the 15th line (Letter N).
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1665 PROJECT ABANDONED 239 "his blessed father and himself as a subject can do from his prince, a nobleman of the best quality, the best allied and the best beloved ; to remove at such a time such a person, and with such circumstances, from his counsels and his trust." The King was not of a mould to resist plain speaking like this, and when not supported by the presence of those who made him their tool and instrument, he seldom managed to make way against the vehemence of Clarendon's rebukes. It could hardly be pleasant for a monarch to be told that what he designs is base ingratitude; that his throne is in danger ; the reputation of his Court in evil savour ; that both require such support as they may be able to get from men of reverence and station, and that he would be mad to alienate any support from such men that may be vouch- safed to him ; yet this was the plain meaning of Clarendon's words. But Charles hesitated to go back, repulsed, to those who had made him their mouthpiece. He remained " rather moved and troubled than convinced." But fortunately Clarendon found an unexpected ally in the Duke of York, who had joined the King and himself at the interview, with the intention, it appears, of supporting the King's purpose. To him Clarendon restated his arguments, and urged him to do the best service to the King his brother " by dis- suading him from a course that would prove so mischievous to him." For this once, the Duke was converted to Clarendon's view, and "prevailed with the King to lay aside the thought of it. "l Once more the Court conspirators 1 Charles not rarely showed a respect for his brother's opinion which was not founded upon any high estimate of his abilities. Clarendon himself remarks this when commenting upon the failure of any attempt to arouse jealousy between the brothers. Charles, he says, " had a just affection for him, and a confidence in him, without thinking better of his natural parts than he thought there was just cause for ; and yet, which made it the more wondered at, he did often depart, in matters of the highest moment, from his own judgment to comply with his brother " (Life, iii. 62).
https://archive.org/stream/lifeofedwardearl02craiuoft/lifeofedwardearl02craiuoft_djvu.txt