(15) Post - 800 Introduction Aust[ralia] (Birds) [Introduction to the "Birds of Australia"], Box: 16, Folder: 56. 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/205882 Accessed June 20, 2025.