Tom Horn see as a warning. During the Wilcox train robbery investigation, Horn obtained information from Bill Speck that revealed which of the robbers had killed Sheriff Josiah Hazen during their escape. Either George Curry or Harvey "Kid Curry" Logan were said to have killed the sheriff. Both outlaws were members of Butch Cassidy's Wild Bunch gang, then known as "The Hole-in-the-Wall Gang" after their hideaway in the mountains. Horn passed this information on to Charlie Siringo, who was working the case for the Pinkertons. Horn briefly entered the United States Army to serve during the Spanish–American War as the chief packer
Butch Cassidy to visit his old father, Maximillian Parker, who died on July 28, 1938, at the age of 94 years." Kelly is thought to have interviewed Parker's father, but no known transcript of such an interview exists. A second-season episode of the television series "In Search of..." (1978) casts doubts on Kelly's conclusions, examining the claims and possible evidence for Butch Cassidy's return to North America during the 1920s. In a series of interviews with residents of Baggs, Wyoming, a popular destination for the Wild Bunch during their raiding years, Cassidy was said to have visited for several days in 1924,