Former Owner
- Alexander Peckover, 1st Baron Peckover1
- Alison Johnstone1
- Alphonse Labitte1
- Anchin Abbey1
- Andrea Tessier1
- Andrea della Valle1
- Andreas Wunder1
- Anne Churchill, Countess of Sunderland1
- Anne de Graville1
- Anne of Brittany1
- Annie L. Wiggins1
- Anthony Askew1
- Antiquarian Books of Boston1
- Antoine Duprat1
- Antonio Medin1
- Antony Bek1
- Arthur Brölemann1
- Arthur M. Ellis1
- Arthur Thomas Bannister1
- Baldasarre Boncompagni1