The Pan-American Philatelist; A Monthly Publication Devoted Entirely to the Philatelic Interests of the Pan-American Countries. Baltimore, Maryland: The Pan-American Philatelist, December 1931

The Pan-American Philatelist; A Monthly Publication Devoted Entirely to the Philatelic Interests of the Pan-American Countries. Baltimore, Maryland: The Pan-American Philatelist, December 1931, Volume: Gilbert C360. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526963 Accessed March 23, 2026.