The Betting Cowboy and Other Conniving Characters From the Old West [by Jesse Cowgill] (Lawrence, Kan, Randolph Books), Box: 2, Folder: 10. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278103 Accessed May 07, 2024.