"Forty Years Association with John Gould the Bird Man." Given at the Easter Meeting, London, 1983-03-30, Box: 26, Folder: 53-58. 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/205918 Accessed June 17, 2024.