"The Literature of Australian Birds: A History and A Bibliography of Australian Ornithology" by Hubert Massey Whittell, OBC [photocopy of handwritten notes], Box: 22, Folder: 6. 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/204773 Accessed November 28, 2024.