Rexall pigeon race to St. Louis; releasing the pigeons in front of Rexall store, September 25, 1920, Box: 14, 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/474168 Accessed November 23, 2024.