"John Gould the Bird Man: Correspondence, Volume 3", edited and compiled by Gordon C. Sauer, with the assistance of Ann Datta, draft, 1999-05-25, Box: 41, Folder: 5. 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/206059 Accessed November 28, 2024.