"John Gould the Bird Man: Correspondence": dates and key words, preliminary list, compiled and edited by Gordon C. Sauer, 1986, Box: 37, Folder: 37-53. 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/206027 Accessed June 26, 2024.