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
Laura Bullion gang, led by Butch Cassidy and Elzy Lay. Members of the Wild Bunch nicknamed Laura Bullion "Della Rose", a name she came by after meeting Kid Curry's girlfriend Della Moore. Often, Bullion also was referred to as the "Rose of the Wild Bunch". When her boyfriend Ben Kilpatrick and she fled east to evade the law after a train robbery in 1901, the couple traveled under the names "Mr. and Mrs. Benjamin Arnold". In an arrest report following the train robbery, dated November 6, 1901, Bullion's name is filed as "Della Rose" and her aliases are stated to be "Clara