"John Gould the Bird Man: Correspondence with a Chronology of His Life and Works, Volume I, through 1838", edited and compiled by Gordon C. Sauer, with the assistance of Ann Datta, draft, 1997, Box: 39, Folder: 21-25. 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/206045 Accessed December 26, 2024.