Catalogue of the Edward E. Ayer Ornithological Library Part 1 by John Todd Zimmer, 1926, Box: 113, Carton: 1. 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/205611 Accessed November 24, 2024.