- Farmers Cooperative Creamery Co.1
- Farmers Mutual Cooperative Creamery Association1
- Farmers Mutual Creamery Co.1
- Farmers Union Cooperative Assoc.1
- Farmers Union Cooperative Exchange, Hartington, Nebr.1
- Farmers' Union, Alpena, S. Dak.; W. Holtey, Virgil, S. Dak.; Mrs. Will Hellwig, Seneca, S. Dak.; H. E. Hallsted, Hay Springs, Nebr.; and Albert Vilhauer, Tyndall, S. Dak.1
- Forney Cotton Oil & Ginning Co.1
- Fort Dodge Laboratories, Inc.1
- Frank B. Frost, acting as manager1
- Frank D. Eby, trading as the Eby Remedy Co.1
- Fred Weitzenkamp1
- Fuller-Morrison Co.1
- G. W. Fortner, Wayne, Neb.1
- General Veterinary Laboratory1
- General Veterinary Laboratory, Omaha, Nebr.1
- George A. Breon & Co.1
- George B. Miller, trading as the Miller Co., the Miller Products Co.1
- George Brocko1
- George D. Miller, Cedar Falls, Iowa1
- George H. Gurler and Charles H. Gurler, copartners, trading under the firm name of Gurler & Co., Cedar Rapids, Iowa1