In 1983, a publisher from Jefferson called Signum Books Ltd. released a 330-page book titled "HA-HA-HA." The cover features a drawing of a man in a suit holding a briefcase while parachuting from a commercial jetliner. The back cover features a graphic of a certificate announcing a contest called "Your Big Score." The certificate's first sentence reads: "It's true. In this book are seven clues. By reading it carefully and discovering the clues, one could receive as much as $200,000 in twenty dollar bills."
The book's author is D.B. Cooper.