Gemco Courier. Buena Park, California: Gemco, May 1978

Gemco Courier. Buena Park, California: Gemco, May 1978, Volume: Gilbert D387. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526062 Accessed December 28, 2025.