In 1991, Snow traveled to San Vicente, Bolivia, to search for the remains of the American outlaws Butch Cassidy (Robert Leroy Parker) and the Sundance Kid (Harry Alonzo Longabaugh).
The search was the subject of the British documentary Wanted - Butch Cassidy and the Sundance Kid, first shown April 22, 1993 in Channel 4's True Stories series.
Snow also participated in a re-enactment of an excavation of Butch Masters in Illinois that aired on The Discovery Channel episode Science Detectives on Discover Magazine.
[5] In 2004, Snow appeared on the Unsolved History documentary television series episode Hunting Nazis on The Discovery Channel.
He continued teaching at the University of Oklahoma, and he also did occasional lectures for Forensic Science organizations and law enforcement personnel.