(22) Post 800 Introduction - Trochilidae ["An Introduction to the Trochilidae"], Box: 17, Folder: 2. 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/205889 Accessed December 30, 2024.