"The Joseph Idea, the Drought, and the American Consumer," remarks by Henry A. Wallve, Secretary of Agriculture at Great Lakes Exposition, Cleveland, Ohio, August 19, 1936, Box: 21, Folder: 32. Frank A. Theis papers, RH MS 948. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/60796 Accessed July 11, 2025.