Former Owner
- Gabriel Wells3
- Gail Fischmann3
- Garibell Smythley1
- Gaspard Joseph de Servais2
- General Bookbinding Company of Chesterland, OH1
- George Bruce2
- George C. Thomas3
- George D. Smith2
- George Dunn1
- George Robert White1
- George Spencer-Churchill, 5th Duke of Marlborough1
- George Templeton Strong1
- Gerardus de Bois1
- Gertrude Leighton1
- Giovanni Colonna1
- Giovanni Pietro Visconti1
- Grabhorn Press1
- Grolier Club1
- Guilberto Broulin1
- Guilelmus Laing1