"John Gould's Partridges of America with Biographical and Biological Notes", Gordon C. Sauer and Paul A. Johnsgard, copy typed, 1985-01-04, Box: 43, Folder: 18. 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/206075 Accessed November 24, 2024.