Knowledge: The University In Your Home. New York: Popular Education, Inc., June 1933

Knowledge: The University In Your Home. New York: Popular Education, Inc., June 1933, Volume: Gilbert D556. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/526384 Accessed December 27, 2025.