Burroughs Audubon Society of Greater Kansas City, 1968 - 1972, Box: 88, Folder: 11-13. Sauer's Gouldiana Research about John Gould and other papers, MS 304. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/205232 Accessed November 28, 2024.