- Hafrower Laboratory, from Glendale, Calif.1
- Hygrade Thermometer Co., from Brooklyn, N. Y.1
- Lee Products Co., Inc., from Cleveland, Ohio.1
- M. F. Robertson Sons, Inc., from Lansdowne, Pa.1
- M. L. Carpenter Medicine Co. of Dublin, Ind.1
- Mann Chemical Co., from Detroit, Mich.1
- Martax Botanical Corp.1
- Metropolitan Laboratories, from New York, N. Y.1
- Missouri Valley Serum Co.1
- Modern Products, Inc.1
- Modern Products, Inc., from Milwaukee, Wis.1
- Mount Clemens Mineral Water Co., Inc.1
- National Hygenics Products, from Akron, Ohio.1
- O. J. Mayfield, from Charles City, Iowa.1
- Parke, Davis & Co., Detroit, Mich.1
- Poison's Health Food Store1
- Pro-Medico Laboratories, Inc., from Brooklyn, N. Y.1
- R. J. Prentiss & Co., Inc., from New York, N. Y.1
- Ray Strahan Mfg.; the Vita-Motor Co.1
- Rexair Div., Martin-Parry Corp., from Toledo, Ohio.1