Former Owner
- Alexander Hamilton, 10th Duke of Hamilton1
- Alfred Chester Beatty1
- Alfred Henry Huth1
- Alfred Trapnell1
- Alison Johnstone1
- Allen Rowland1
- Amelia Daubeney1
- Anchin Abbey1
- Andrew Fountaine1
- Andrew Gifford1
- Anna Maria Louisa Peachey1
- Anne Jesson1
- Anne of Brittany1
- Antiquarian Books of Boston1
- Antoine Joseph Rérolle1
- Antoine Lagnier1
- Antoine de Court1
- Antonio Cánovas del Castillo1
- Arnold Jansen op de Haar1
- Arthur Haddaway1