Industria marcadora. Chicago, Ill.: Marking Devices Publishing Company, Otoño (Fall) 1946

Industria marcadora. Chicago, Ill.: Marking Devices Publishing Company, Otoño (Fall) 1946, Volume: Gilbert D503. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526281 Accessed December 28, 2025.