Robert Wohletz (1999), Bob Warthen, Bill Tidball, Mark Underhill, Wanda Tidball (1997), Kyle Staple (1995), Andrew Decker, Galen More (?), Bill Rawlings, William Prohaska (1995), Jim Powers (2000), Michael O'Conner (1994), Box: 2, Folder: 33. Martin Tractor Company records, RH MS 864. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/154264 Accessed January 03, 2025.