Former Owner
- John D. Stanitz1
- John Fletcher Hurst1
- John Henry Ellis1
- John Hindley1
- John Lee1
- John Morgan1
- John Peacock1
- John Read Dore1
- John Ruskin1
- John Stow1
- John Topham1
- John Trotter Brockett1
- John Willis1
- Joseph François René de Kergariou1
- Jules Bonhomme1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kenneth Hyde1
- Klaus Dieter Dahmen1
- Kulturhistorisches Museum Magdeburg1
- Lady Margaret Ayloffe1