Our Invisible Government. Long Island, New York: Associated Authors, Inc., September 1935

Our Invisible Government. Long Island, New York: Associated Authors, Inc., September 1935, Volume: Gilbert D745. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526939 Accessed December 27, 2025.