- De Pree Co.1
- Dee-Em Laboratories, New York, N. Y.1
- Dietary Foods Co., Inc.1
- Dr. W. A. Link Medicine Co.1
- E. Fougera & Co., Inc.1
- Edgerton Manufacturing Co.1
- El-Dee Manufacturing Co.1
- Feldman & Martin, Inc.1
- France Drug Co.1
- Frank E. Beach, trading as Beach's Wonder Remedy Co.1
- G. F. Harvey Co.1
- George A. Breon & Co., Inc.1
- George W. Slaughter, trading as the Rival Herb Co.1
- Gland-O-Lac Co.1
- Glens Falls Pharmacal Co., Inc.1
- Great Century Medicine Co.1
- H. G. G. Fink's laboratories1
- Harry L. Williams, trading as Williams Laboratories, Kansas City, Mo.1
- Hemoliver Products Co.1
- Interstate Drug Co.1