Lee Blanck three copies, Dale Sterrett, Jeff Rhodes (1993), Gerald Pfeiffer, Betty Cyphers, Dan Dayton, Don Dunn, Jeffrey Tile, Lee Meredith two copies, Ed Koepsel, David Bourassa, David Casey two copies, Scott Stanlick, Jeffrey Geiger, Betty Martin, Connie Cooley, Box: 2, Folder: 15. Martin Tractor Company records, RH MS 864. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/154246 Accessed June 16, 2025.