Larry Marvin Morris, a 24-year-old seismograph worker from Oklahoma, disappeared on April 26, 1974, while working in Riverton, Wyoming. He planned to visit Yellowstone National Park before returning home but never reached either destination. His green 1966 Ford pickup truck went missing with him and was later recovered abandoned in California.

Two men who had recently escaped from prison, James Jagers and Jack Lincoln, were later arrested carrying Morris’s credit cards and personal belongings; the cards had been used in Idaho, Nevada, and California. Neither man cooperated with investigators. In 1983 Jagers hinted that he knew where Morris’s remains were, but that information did not lead to a resolution. Morris’s body has never been found and the case is treated as a homicide and remains open.

If anyone remembers seeing Morris, his green 1966 Ford pickup, or observed suspicious activity along his planned route in April 1974, please share what you know.