Former Owner
- Girolamo Cardina1
- Girolamo d'Adda2
- Giulio Antonio Acquaviva1
- Giulio Saibante1
- Giuseppe Antonio Saccardini1
- Giuseppe Canonici1
- Giuseppe Martini11
- Giusto Venier1
- Gladys Freeman1
- Godefroy Honore1
- Gonthaut-Saint-Blanchard family1
- Goodspeed's Book Shop1
- Gordon A. Block Junior1
- Grabhorn Press1
- Griffon's Medieval Manuscripts, Inc.1
- Groenendael Priory1
- Grolier Club1
- Gudrun Wandel9
- Guglielmo Libri Carucci dalla Sommaja11
- Guilberto Broulin1