The Western Story: The Rise of The Western Insurance Companies, by C. C. Otto [Fort Scott, Kan, The Western Insurance Companies, 1976], Box: 3, Folder: 4. Clifton Crain Otto collection of the Western Insurance Companies records, RH MS 1146. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/90918 Accessed May 11, 2024.