British Museum (Natural History) 1985. Annual Bibliography of the History of Natural History. Vol. 1, publications of, 1982, Box: 15, Folder: 8. 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/205826 Accessed February 26, 2025.