Notes on Mongols, Polish history, late 16th and 17th century, Muscovy, reading lists, Kazan, Crimea, Novgorod, Box: 1, Folder: 48. Personal papers of John T. Alexander, PP 46. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/221365 Accessed November 27, 2024.