- Alfred Richard Christensen, trading as Junction City Creamery, Junction City, Oreg.1
- Allan K. Dickinson, Jr., manager of the Oswego Jelly Co.1
- Allan K. Dickinson, trading as the Oswego Jelly Co.1
- Allen & Lewis, Portland, Oreg.1
- Allen Fruit Co.1
- Allen Fruit Co., Inc.2
- Alpine Tea Co.1
- Altoona Packing Co.1
- American Apothecaries Co.1
- American Chicle Co.1
- American Chicle Co., a corporation organized under the laws of New Jersey, authorized to do business at Portland, Oreg.1
- American Fruit Distributors of California1
- American Maize-ProductsCo.1
- American Medicinal Products, Inc.1
- American Pop Corn Co.1
- American Trading Co.1
- Andrews-Wilmans Biscuit Co1
- Andrews-Wilmans Biscuit Co.1
- Anti-Uric Co.1
- Ariss, Campbell & Gault1