Group of men, left to right--Colorado Charlie Utter, Wild Bill Hickok, Buffalo Bill Cody, Texas Jack Omohundro, Arapahoe Joe?, Box: 1, Folder: 9. William Elsey Connelley papers, RH MS 2. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/408667 Accessed April 29, 2024.