- American Kitchen Products1
- American Meat Institute2
- American Pop Corn Co.1
- American Sugar Refining Company1
- Andrews Museum2
- Andrews Old Town Hall Museum185
- Angelus Campfire Co.1
- Arm & Hammer, New York1
- Arm & Hammer, New York Cow Brand Baking Soda, Church and Dwight Company1
- Arm & Hammer, New York Cow Brand, Church and Dwight Co. 1
- Armour2
- Armour and Company3
- Arvin Industries, Inc.1
- Associated Salmon Packers1
- Association of Hawaiian Pineapple Canners, San Francisco, California1
- Avery Research Center at the College of Charleston10,553
- Baker's1
- Battery Gadsden Cultural Center15
- Beaufort County Library1,361
- Belknap Hardware and Manufacturing Co., Incorporated1