
The poem's author probably read the retelling of the Roslyn Atwood story only four days after the Cheri Jo Bates murder on October 30th 1966, when the Riverside Daily Press newspaper on November 3rd 1966 compared the murder of Cheri Jo Bates to the Roslyn Atwood stabbing on the same campus (see below). But was the desktop author the murderer? Investigators realised Rolland Taft was still behind bars on October 30th 1966, so couldn't have been responsible for the murder of Cheri Jo Bates or the poem.
The Riverside Desktop author must have been inspired to search for details regarding this attempted murder in 1965, that would ultimately form the first part of the desktop poem, which borrowed from the Riverside Daily Press newspaper headline on April 17th 1965 entitled "Clean-cut youth sought in stabbing".(Credit: MK Zodiac). The Riverside Desktop Poem began with "cut, clean, if red/clean. blood spurting, dripping, spilling; all over her new dress". The second section of the poem moved from Roslyn Atwood to Cheri Jo Bates, stating "Someone'll find her. Just wait till next time. rh." The "rh" abbreviation can be found in a newspaper article about Roslyn Atwood from the Riverside Daily Press newspaper on April 29th 1965. It is not a signature.
The Rh blood group system is a human blood group system. It contains proteins on the surface of red blood cells. After the ABO blood group system, it is the most likely to be involved in transfusion reactions. The Rh blood group system consisted of 49 defined blood group antigens in 2005. As of 2023, there are over 50 antigens among which the five antigens D, C, c, E, and e are the most important. There is no d antigen. Rh(D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type (e.g., someone who is A+ has the A antigen and Rh(D) antigen, whereas someone who is A− has the A antigen but lacks the Rh(D) antigen). The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D) antigen only. Antibodies to Rh antigens can be involved in hemolytic transfusion reactions and antibodies to the Rh(D) and Rh antigens confer significant risk of hemolytic disease of the newborn.
Cheri Jo Bates' blood type detailed at autopsy is rare in the USA population. It was AB RhD positive, which accounts for only 3% of the American population. Did the author of the poem use the "rh" footnote in the Roslyn Atwood newspaper article on April 29th 1965 because they knew the rarity of Cheri Jo Bates' blood grouping? Disregarding this last observation, we still have a November 3rd 1966 newspaper article from the Riverside Daily Press comparing the Atwood and Bates cases only four days after the Riverside murder, and another article from the same newspaper on April 29th 1965 about the stabbing of Roslyn Atwood with an attached educational footnote, reading "The RH factor in blood was identified in 1940". So did the author create the desktop poem shortly after the November 3rd 1966 article, that would ultimately shape the linguistics of the Confession letter on November 29th 1966?
Miss Atwood escaped the clutches of Rolland Lin Taft in 1965, expressed by the desktop author when they stated "she won't die, this time someone'll find her", but reminded everybody that the next time Cheri Jo Bates wouldn't be so lucky by finishing the poem with "Just wait till next time. rh".
Thanks to Jibberjabber for giving me access to a new newspaper database