- Elam Mills, Inc.1
- Herrman-McLean Co., Monroeville, Ohio, and Walter C. Seaman, plant manager1
- J. William Cain and Elmer P. Reed.1
- John W. Eshelman & Sons1
- Kalmbach-Burckett Co., Inc.1
- Murphy Grain & Milling Co., Owensboro, Ky., and Francis X. Murphy, Sr., a partner1
- Richards Milling Co.1