The Roadside Bulletin. Washington, D.C.: American Nature Association, July 1930

The Roadside Bulletin. Washington, D.C.: American Nature Association, July 1930, Volume: Gilbert D860. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527327 Accessed December 27, 2025.