"John Gould The Bird Man: A Chronology of the Life and Works of John Gould, Part 3", Box: 41, Folder: 39. 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/206062 Accessed June 17, 2024.