DB Cooper is finally solved using Jack Tarrance code systems which are basically anagrams for the majority of the cryptic messages he was involved in being sent to Newspapers. Jack Tarrance is FBI DB Cooper suspect since he lived in South Lake Tahoe from apx 1969-1974 especially when living with Nora Kaufman. Dennis Kaufman, Nora's son, became convinced his Stepfather was the real Zodiac Killer circa 2000, went to FBI whom immediately felt Jack was the best Zodiac suspect. Jack started confessing to family members he was Zodiac while alive but his codes were hard to break. I met Dennis Kaufman online under his alias KennyKilgore c2001 but by 2009 got to personally meet him and support him in his endeavors to help solve the many mysteries involving the now deceased Jack Tarrance. My main goal was to crack the codes. Even Dennis believed that if I just kept trying, I would find the system he used. I did. By 2017, after watching the History Channel "Hunt For The Zodiac" show and they brought up the possibility of a Chess Board Cipher being used for the 340 Cipher, I realized this was a method that I didn't go into depth of exploration. I tried using what turned out to be a basic Cardona Grille Cipher Method aka Chessboard Cipher, that also uses anagramming......the codes starting breaking. But when I went after the DB Cooper cryptic communications, I found them to be anagrams using many of the same common code keys Jack used in Zodiac communications. So, I started to blog the solves at dbcoopersolved.com but I see a need for a book that true crime mystery readers would love to have in their collections. So enjoy seeing before your very eyes, what the world of Jack has to say and to whom, why, what, when and where. He's working alot with Nixon and his administration in his DB Cooper era and it appears it's an extension of the late Bobby Kennedy Get Hoffa Squad. Anyway, this is the ultimate DB Cooper book to have as it solves the mystery!