National Conv[ention] of Mammalogists, June 1940, Feb[ruary] 1952 Two Amsden Brothers and Hall [photographs], Box: 2, Folder: 42. Personal papers of E. Raymond Hall, PP 167. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/265683 Accessed September 20, 2024.