J. Clark and Henrietta (Sheppard) Cox and Emma Cooper from E. Beth Cox, 1958, 1971, Box: 12, Folder: 3. Cooper-Sheppard-Cox family papers, RH MS 576. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/159307 Accessed June 19, 2025.