Bartlesville, OK-Reverend Boehringer and Junior near wrecked car (913-1), picnicking at Oklahoma State Osage Park near Bartlesville, April 20-22, 1950, Box: 55, Folder: F:913. Bourquin family collection, RH MS G61. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/479105 Accessed June 26, 2024.