Rexall Pigeon race to St. Louis; releasing the pigeons in front of Rexall Store, June 25, 1920, Box: 52, Folder: F:616. Bourquin family collection, RH MS G61. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/478829 Accessed June 26, 2024.