Former Owner
- Abbaye de Saint-Sulpice1
- Abbey of Morimondo1
- Acton Griscom1
- Adán Inquaci1
- Alain Campbell White1
- Alan Noel Latimer Munby1
- Albert C. Baugh1
- Alexander Boswell, Lord Auchinleck1
- Alfred John Horwood1
- Algernon Percy, 10th Earl of Northumberland1
- Andreas Weiss1
- Antiquarian Books of Boston1
- Antonio Laserna1
- Antonio Ubaldini1
- Arthur Annesley, 1st Earl of Anglesey1
- Arthur Hood, 1st Baron Hood of Avalon1
- Arthur Thomas Bannister1
- August Merz1
- Battista di Ser Cicco di Fermo1
- Battle Abbey1