- Edgar H. Gremore, Florence, Wis.1
- Edward T. Keenan, trading as Keenan Laboratories, Frostproof, Fla.1
- Egyptian Tea Co., from Akron, Ohio.1
- Estro Chemical Co., Inc., from New York, N. Y.1
- George A. Breon & Co., Inc., Kansas City, Mo.1
- Hawkeye Sales, Inc., from Des Moines, Iowa.1
- Herman Achs, trading as Certified Laboratories, Philadelphia, Pa.1
- Hilltop Laboratories1
- Hobbs & Co., a partnership, Kansas City, Kans., and Walter C. Hobbs and Mason B. Hobbs, members of the partnership.1
- Institutional Products Co., from New York, N. Y.1
- James J. Kaplan, trading as the Diamond Drug & Magnesia Co., at Boston, Mass.1
- Kathryn, Inc.1
- Kirkpatrick Laboratories, Inc., Portland, Oreg., and Dr. George Kirkpatrick.1
- Latex Distributing Co., from Chicago, Ill.1
- Lawrence P. Dickey, trading as the L. P. Dickey Co., Tucson, Ariz.1
- Maynard H. Smith, Washington, D. C.1
- National Drug Laboratories, Inc., Chicago, Ill., and Jules Press, president of the corporation.1
- National Drug Laboratories, Inc., from Chicago, Ill.1
- Nature's Mineral Food Co., Indianapolis, Ind., and Perry B. Smith, a partner.1
- Paul Case, Brockton, Mass.1