- A. W. Sisk & Son1
- A. W. Sisk & Son, Philadelphia, Pa.1
- A. Wachs, Philadelphia, Pa.1
- Abbott Bros. Co.1
- Abbott's Dairies, Inc.2
- Abraham H. Kaitz, trading as American Proprietaries, at Philadelphia, Pa.1
- Abraham Margulis1
- Acker Pecan Products Co.1
- Acme Stock Salt Co., Inc.1
- Adam Scheidt Brewing Co.1
- Adams Baking Company, Norfolk, Va.1
- Agash Refining Corporation2
- Aid Laboratories2
- Aiken Schwartz Co.1
- Aiken-Schwartz Co.1
- Akerite Chemical Works, Inc.2
- Akin Products Co.1
- Akron Candy Co.1
- Alart & McGuire1
- Albert B. Koblank, Philadelphia, Pa.1
