Science Facts; A Digest Magazine. Emmaus, Pa.: Rodale Publications, Inc., November 1938

Science Facts; A Digest Magazine. Emmaus, Pa.: Rodale Publications, Inc., November 1938, Volume: Gilbert B241. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527381 Accessed December 26, 2025.