Howard C. Lathrop: To Eva Phillips; From R.C. Caldwell; To Howard S. Lathrop (Howard C.'s son), 1928 - 1939, Box: 1, Folder: 50. Frowe and Lathrop families records, RH MS 696. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/228392 Accessed June 02, 2024.