Burroughs Audubon Society of Greater Kansas City, 1973 - 1977, Box: 88, Folder: 14-16. 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/205233 Accessed November 28, 2024.