- Alaska Year Round Canneries Co.1
- Alfonso Fish Market1
- Alle-Rhume Remedy Co.1
- Allen & Wheeler Co.1
- Alonzo O. Bliss Medical Co.1
- Alton Canning Co., Inc.1
- American Agricultural Chemical Co.1
- American Co.1
- American Fruit Growers (Inc.)1
- American Fruit Growers, Inc.1
- American Pharmaceutical Co.1
- American Preserve Co.1
- American Preserve Company, Philadelphia, Pa.1
- American Stores Co.2
- American Synthetic Co., Philadelphia, Pa.1
- Amory & Holloway1
- Andrew Baumgartner Co., of Baltimore, Md.1
- Angier Chemical Co., Boston, Mass.1
- Animal Foods Co.1
- Anna Lavinia Whitehurst, trading as The J. Harrison Wnitehurst Co., Baltimore, Md.1