Collector's Digest. Buffalo, N.Y.: Index Service Company, January/February 1918

Collector's Digest. Buffalo, N.Y.: Index Service Company, January/February 1918, Volume: Gilbert D197. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525520 Accessed December 28, 2025.