Journal articles: "Der Truppeneinmarsch am 10. Dezember 1918 in Berlin" Erwin Koennemann 1968, Box: 3, Folder: 15. German State Documents, RH MS 228. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/6584 Accessed January 16, 2025.