Former Owner
- Gonthaut-Saint-Blanchard family1
- Goodspeed's Book Shop1
- Gordon A. Block Junior1
- Groenendael Priory1
- Grolier Club1
- Guilberto Broulin1
- Guilelmus Laing1
- Guillemette Bezard1
- Gustavo Camillo Galletti1
- Gusztáv Emich1
- Habert du Berry d'Artois family1
- Hamon Styleman Le Strange1
- Hans Albrecht von Derschau1
- Harold Baillie Weaver1
- Harold Drayton1
- Harrison Gray Otis1
- Harrison Wright1
- Harrold E. Gillingham1
- Harry Peach1
- Hastings family1