- A. Brousseau's Son (New Orleans, La.)1
- A. Geiger & Company (New Orleans, La.)1
- Acushnet (Whaler)1
- Adams, Edward T.1
- Adolph G. Ricks & Co. (New Orleans, La.)1
- Ali Pașa, Tepedelenli, 1744?-1822.1
- Allen, William, 1532-1594.1
- Ampudia, Pedro de, 1805-1868.1
- Anheuser-Busch Brewing Association1
- Antonelli, Giacomo, 1806-1876.1
- Archuleta, Diego, 1814-1884.1
- Argonaut (Ship)1
- Arlaud, Leon.1
- Armijo, Manuel, 1792?-1853.1
- Arnold, Edwin, Sir, 1832-1904.1
- Arthur, Chester Alan, 1829-18861
- Arundel and Surrey, Thomas Howard, second earl of, 1585-1646.1
- Associated Press.1
- Avenue Theatre (New Orleans, La.)1
- Baines, Matthew Talbot, 1799-1860.1