Keystone Income Fund Series K-1, Keystone Discount Bond Fund Series B-4 and Keystone Low-Priced Bond Fund Series B-3, 1959 - 1960, Box: 1, Folder: 63. McClymonds family papers, RH MS 1243. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/56602 Accessed November 23, 2024.