- Albin Creamery Co.1
- Alpha Aromatic Laboratories1
- Alton Canning Co., Inc.1
- American Home Foods, Inc.1
- American Roland Food Co.1
- American Stores Co.2
- American Stores Co., Inc.1
- American Stores Produce Company1
- Anderson Creamery Co.2
- Andrew's Coffee Co.1
- Andrews & Knowles1
- Anken & Feuz1
- Aram E. Attarian, trading as Tower Candy Co.1
- Ariston Canning Co.2
- Ariston Canning Co., Inc.1
- Armani and Filosi, a partnership, Toughkenamon, Pa.1
- Armour & Co.1
- Armour & Co., Chesapeake Plant1
- Arthur Collins1
- Arthur H. Decker, trading as Chandler Laboratories, Philadelphia, Pa.1
