- Healthmaster Steamette Co., from Burbank, Calif.1
- Herbert Thompson, trading as Closson & Kelly Drug Store, Seattle, Wash.1
- Holdfast Truss Co.1
- James Street Pharmacy, Inc., Seattle, Wash.1
- James V. Thompson, trading as Thompson's Drug Store, at Lynden, Wash.1
- Joseph Edward Layton, trading as Production Laboratories, Seattle, Wash.1
- Kovac Laboratories1
- LeLord Kordel and LeLord Kordel Products1
- Lenmar Co.1
- Leslie M. Nelson, trading as the Green Lake Pharmacy, Seattle, Wash.1
- Luseaux Laboratories1
- Maffet Sales Corporation and Frank L. Wilson, Nell B. Wilson, and Reuel K. Yount1
- McKesson & Bobbins1
- McKesson & Bobbins, Inc.1
- Natura Remedy Co.1
- Nutritional Products1
- Parke, Davis & Co.1
- Radcliffe's [Radcliffe Soya Products]1
- Renton Ten Cent Drug, a partnership, Renton, Wash.1
- Robert M. Walker, trading as Closson-Kelly Drugs, at Seattle, Wash., and James Mason, an employee of Closson-Kelly Drugs.1