"Bernhard Warkentin and the Hard Winter Wheat of Kansas, 1873-1902" by Victor H. Neufield, May 1965

"Bernhard Warkentin and the Hard Winter Wheat of Kansas, 1873-1902" by Victor H. Neufield, May 1965, Box: 3, Folder: 56. Personal Papers of George L. Anderson, PP 375. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/191703 Accessed March 19, 2026.