Transportation Problem: Long and Short Haul Statement to the National Trans. Council on behalf of the Transcontinental Railroads, December 8, 1932, Box: 21, Folder: 3. Frank A. Theis papers, RH MS 948. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/60767 Accessed July 07, 2025.