William F. Brooks, executive secretary, N.G.T.C at Colorado Grain, Milling and Feed Dealers' Association, February 27, 1952, Box: 25, Folder: 27. Frank A. Theis papers, RH MS 948. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/60973 Accessed June 01, 2024.