"John Gould The Bird Man: A Chronology and Bibliography" compiled by Gordon C. Sauer, Section 4 - after Bibliography, 1980-03-27, Box: 34, Folder: 40-41. 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/205985 Accessed June 17, 2024.