Tours and Detours. New York: General Drafting Co., Inc., June 1, 1931

Tours and Detours. New York: General Drafting Co., Inc., June 1, 1931, Volume: Gilbert Q195. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527809 Accessed December 26, 2025.