Former Owner
- Otto Ege2
- Piero Ginori Conti2
- Wilfrid Voynich2
- William Taylor Scheide2
- Abbaye de Saint-Sulpice1
- Abbey of Morimondo1
- Acton Griscom1
- Adán Inquaci1
- Alain Campbell White1
- Alan Noel Latimer Munby1
- Albert C. Baugh1
- Alberto Govi1
- Alexander Boswell, Lord Auchinleck1
- Alfonso Cassuto1
- Alfred John Horwood1
- Algernon Percy, 10th Earl of Northumberland1
- Andreas Weiss1
- Antiquarian Books of Boston1
- Antonio Laserna1
- Antonio Medin1