Former Owner
- Antonio Marino de Caboga1
- Antonio Pallavicini Gentili1
- Antonio Ubaldini1
- Antonio de Bonius1
- Appiano family1
- Archer Milton Huntington1
- Arno M. Voynich1
- Artemesia Piccolomini1
- Avraham Yedidiah Levi1
- Baldasarre Boncompagni1
- Baron Llangattock1
- Bartholus Blancellus1
- Basilica of Sant'Ambrogio1
- Beatrice de Fouar1
- Benediktinerinnenabtei St. Walburg1
- Benjamin Franklin Stevens1
- Bernard Rosenthal1
- Bernardo Bembo1
- Bet din tsedeḳ London ṿeha-medinah1
- Beverly Chew1