Names
- Arensberg, Louis Frederick1
- Arkley, Alexander Thayer (d. 1908)1
- Armstrong, Charles Truman (d. 1889)1
- Armstrong, Oscar Samuel1
- Armstrong, Rolla Silas1
- Arnold, Orrin (d. 1883)1
- Association of Schools of Public Health.1
- Atomic Bomb Casualty Commission.1
- Atwood, Oliver Madison (d. 1916)1
- Austin, Hiram William1
- Axtell, Julien Harrison (d. 1872)1
- Aylsworth, Homer Elhanan (d. 1885)1
- Ayres, Ann (d. 1876)1
- Ayres, George Byron (d. 1890)1
- Bacheler, Joseph Howard (d. 1899)1
- Bacon, Martin Wright (d. 1922)1
- Bailey, John Read (d. 1910)1
- Bailey, Sarah Elizabeth (Brown) (d. 1901)1
- Bailey, William Worth (d. 1913)1
- Baird, John Henry1