Letters to Paul E Havens from his brother Arthur B. Havens, September 7, 1871 - July 1, 1881, Box: 1, Folder: 29. Anthony and Havens family papers, RH MS 555. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/541796 Accessed June 26, 2024.