MoP (Missouri Pacific) 2nd gen diesels 5055 - 9031, steams, cars, cabooses; MR (McCloud River RR) – M&StL (Minneapolis & St Louis) diesels, Box: 9, Box: 62. Howard Killam Collection, RH MS 1381. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/226803 Accessed May 19, 2024.