"John Gould the Bird Man: Correspondence", edited and compiled by Gordon C. Sauer, with the assistance of Ann Datta, 1837, Box: 46, Folder: 51-64. 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/206139 Accessed November 24, 2024.