Former Owner
- Giannalisa Feltrinelli2
- Giovanni Perissinotti2
- Giuseppe Bruschetti2
- Goodspeed's Book Shop2
- Gordon A. Block Junior2
- Hans Albrecht von Derschau2
- Harrison Wright2
- Harry Creswick2
- Harry Levinson2
- Henry Ellis Allen2
- Henry George Bohn2
- Henry Percy, 9th Earl of Northumberland2
- Henry Wyndham, 2nd Baron Leconfield2
- Henry Young and Sons2
- Hodgson & Co.2
- Homer D. Crotty2
- House of Sforza2
- Hugo Philipp Waldbott-Bassenheim2
- Ida M. Havens2
- Imre Hodossy2