Former Owner
- Abbey of Saint Gall1
- Abbot Raphael of Czerwinsk1
- Abraham I. Katsh1
- Admont Abbey Library1
- Alan G. Thomas1
- Albert Figdor1
- Alexander Smets1
- Alfred Chester Beatty1
- Alfred Henry Huth1
- Alfred Morrison1
- Ambroise Firmin Didot1
- André Rooryck1
- Anne Baker Lewis1
- Antonio Medin1
- Antonio di Matteo di Giovanni Foresi da Bibbiena1
- Archibald Primrose, 5th Earl of Rosebery1
- Arnold Mettler1
- Arthur Liddell, 5th Baron Ravensworth1
- Asahel Grant1
- B.S. Cron1