- Army Medical Board of Ireland.1
- Arnaud de Ronsil, Georges, 1698-17741
- Arrese, Pedro JoseĢ de, -17951
- Arthaud, Charles.2
- Aspinwall, George, 1774-18041
- Asylum for Orphan Girls (London, England)2
- Austin, David, 1759-18312
- Austin, William, 1721-1820, artist1
- Author of Some information on the use of Indian corn, author1
- Avicenna, 980-10371
- Bache, William, 1773-18181
- Baillie, Matthew, 1761-18231
- Baldini, Filippo, 1750?-, author1
- Ball, Thomas.1
- Bannister, J., fl. 17821
- Baratti, Antonio, 1724-1787, engraver24
- Baratti, Antonio, engraver2
- Barba, Alvaro Alonso, 1569-1
- Bard, John, 1716-17991
- Bard, Samuel, 1742-18213