"John Gould The Bird Man: A Chronology and Bibliography" compiled by Gordon C. Sauer, [Section] B, Box: 34, Folder: 44-50. 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/205987 Accessed March 13, 2025.