- Brooklawn Creamery Co.1
- Calder Bros. Co.1
- California Nut Co.1
- California Packing Corporation1
- California Prune & Apricot Growers Association1
- Cecil James Cardwell, trading as Trapper's Remedies, Inc., Weiser, Idaho1
- Chambers Medicine Co.1
- Clifford R. Farnsworth, trading as Clearwater Creamery Co.1
- Coast Food Products, Inc.1
- Columbia Van & Storage Co.1
- Commercial Creamery Co.1
- Cooperative Canning Exchange1
- Crowther Bros. Milling Co.1
- Cured Fruit Association1
- Dairymen's Cooperative Creamery1
- Deer Island Fish & Oyster Co.1
- Dina-Mite Food Co.1
- Dixie Preserves, Ltd.1
- Douglas Products Co.1
- E. L. Kinney, trading as American Bakery, Nampa, Idaho1