Hundreds Of Theories
After failing at finding any other evidence of Cooper’s whereabouts, hundreds of theories about Cooper’ began to pop up. Author Ross Richardson wrote a book about Cooper, and other mysterious disappearances including people, ships, and planes. He claims that D.B. Cooper was actually Richard Lepsy, a Grayling, Michigan resident who disappeared in October of 1969, leaving behind a wife and 4 kids, never to be seen again.