Jack Tarrance died in 2006, but had previously spent time as a serviceman in the navy and air force, which ties in with the military boots worn by the killer in the Lake Berryessa attack. He was a radio operator that provided him the the opportunity to learn coding, plus the composite sketches drew up based on the eyewitness recollections from the murder of Paul Stine on October 11th 1969 bore a hauntingly near likeness to Jack Tarrance.
However Dennis Kaufman has come under widespread criticism for some of his claims and been roundly discredited by many people. The FBI later performed DNA and handwriting analysis on the items of interest in 2010, but these tests were deemed inconclusive, ruling Jack Tarrance neither in, nor out of the Zodiac mystery. Dennis Kaufman appeared on a Discovery Channel documentary presented by true crime writer Aphrodite Jones, where he outlined his belief that his stepfather was in all likelihood the Zodiac Killer. The part featuring Kaufman begins at 14.56 into the video. He recruited Nanette Barto, a Court Certified Forensic Document Examiner to take a look at Jack Tarrance's handwriting and compare it to the letters written by the Zodiac Killer. (37.11 in video). She thoroughly examined the handwriting exemplars provided and when prompted by Aphrodite Jones, she stated "I think Dennis Kaufman really does have the stepfather of the Zodiac Killer." However Nanette Barto's impartiality has been called into question regarding certain aspects of the above suspect. LENGTHY SACRAMENTO NEWS ARTICLE ON DENNIS KAUFMAN https://www.newsreview.com/sacramento/zodiac-is-back/content?oid=283929 https://sites.google.com/site/zodiackillerjacktarrance/home 
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1963 June 4th-Domingos/Edwards Murders
1966 October 30th-The Cheri Jo Bates Murder 1966 November 29th -The Confession Letter 1966 December- Riverside Desktop Poem 1967 April 30th- Bates Had to Die Letter 1968 December 20th- Lake Herman Murders 1969 July 4th-The Blue Rock Springs Attack 1969 July 31st- Vallejo Times Herald Letter and 408 Cipher Page1 (solved) 1969 July 31st- Examiner Letter and 408 Cipher Page 2 (solved) 1969 July 31st - Chronicle Letter and 408 Cipher Page 3 (solved) 1969 July 31st-The Complete 408 Cipher 1969 August 4th- Debut of Zodiac Letter 1969 September 27th- Lake Berryessa Attack 1969 October 11th- Presidio Heights Murder 1969 October 13th-The Paul Stine Letters 1969 October 22nd-Call to Chat Show 1969 November 8th- Dripping Pen Card and 340 Cipher (unsolved) 1969 November 9th-The Bus Bomb Letter 1969 November 28th- Betsy Aardsma Murder 1969 December 16th-The Fairfield Letter 1969 December 20th-The Melvin Belli Letter 1970 Feb 21st- The Hood and Garcia Murders 1970 March 22nd-The Modesto Attack 1970 April 20th-"My Name is" Letter, Cipher 3 (unsolved) and Bus Bomb Diagram 1970 April 28th-The Dragon Card 1970 June 26th-The Button Letter Cipher 4 (unsolved) and Map 1970 July 4th-The Sleeping Bag Murders 1970 July 24th-The Kathleen Johns Letter 1970 July 26th-The Little List Letter 1970 Sept 6th-The Donna Lass Disappearance 1970 October 5th-13 Hole Postcard 1970 October 27th-The Halloween Card 1971 March 13th-The Los Angeles Letter 1971 March 22nd-The Pines Card 1974 January 29th-The Exorcist Letter 1974 February 14th-The SLA Letter 1974 May 8th-The Citizen Card 1974 July 8th-The Red Phantom Letter 1974 December 27th- Christmas Card 1978 April 24th-The 1978 Letter 1987 October 28th- The 1987 Letter 1990 December-American Greetings Card |
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