Wally Wallis two copies, Diana Fell, Jennifer Williams, Ken Schmidt two copies, H.W. Craig, Beth Ann Branden, Pat Land, Todd and Debbi Crates, Bonnie, Cole and Ron Carlson, Doug Sund, Bob Jensen, Harry Craig, Box: 2, Folder: 40. Martin Tractor Company records, RH MS 864. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/154271 Accessed January 03, 2025.