Sam Brown, Phil Beurskens, Dale Lalman, Don Amspacker, Roger and Susan Byler, Shelby Cayton, Barb Sund, Taylor Tomson, Dorothy Lamb, Amy Lamb, Ken Schmidt, Cindy Stout, Ray Bramlage, H.W. Craig, Sue Bisel, Beth Anne Branden, Box: 2, Folder: 71. Martin Tractor Company records, RH MS 864. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/154302 Accessed June 19, 2025.