"John Gould The Bird Man: Bibliography 2", #1, by Gordon C. Sauer, Box: 33, Folder: 46-49. 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/205975 Accessed November 24, 2024.