Manuscripts and correspondence with Encyclopedia Britannica regarding Weir's contributions in defining "sex ratio", 1959-1960; 1962, Box: 6, Folder: 7. Personal papers of John "Jack" A. Weir, PP 404. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/261460 Accessed September 20, 2024.