Former Owner
- Johannes de Helb1
- John Boykett Jarman1
- John Eliot Hodgkin1
- John Fletcher Hurst1
- John Harvey Treat1
- John Morgan1
- John Walker1
- John William Harshberger1
- Joseph Pope1
- José Fernando Ramírez1
- Kloster Kuringen1
- Lambertus Eerens1
- Laurent Campagne1
- Legoué1
- Louis Charles Elson1
- Lucy Evans Chew1
- Luigi Serra di Cassano1
- Lyon Cathedral1
- Manookjee Sorabjee Ashburner1
- Manuel Fernández del Castillo1