Projection drawing workbooks (2) for Bethel College, 1932, RH MS Q441, Box: 2, Folder: 9. Voth, Unruh, and Banman families collection, RH MS 1455. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/376655 Accessed December 30, 2024.