To Eliza K. Morgan from E.W. and S.J. Penny, September 3 1910 (postmark), July 16 1911, Box: 7, Folder: 74. Personal Papers of Rose Ruth Morgan and Family, PP 567. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/206488 Accessed June 02, 2024.