"John Gould the Victorian Bird Man" by Gordon C. Sauer, sections 1, 2, 3, Box: 36, Folder: 22-32. 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/206010 Accessed June 26, 2024.