Excel Express. Plainview, Texas: Excel Sorghum Company, Fall 1965

Excel Express. Plainview, Texas: Excel Sorghum Company, Fall 1965, Volume: Gilbert D457. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525867 Accessed December 27, 2025.