Think; A "Spotlight" on New Things and Thoughts in the World of Affairs. New York: International Business Machines Corporation, June 1935

Think; A "Spotlight" on New Things and Thoughts in the World of Affairs. New York: International Business Machines Corporation, June 1935, Volume: Gilbert E256. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/527734 Accessed December 27, 2025.