- Galeazzo Maria Sforza, Duke of Milan, 1444-14761
- Gems1
- Genealogy1
- Generals1
- Geography, Ancient1
- Geometry1
- Georgica (Virgil)1
- Germanic Invasions of Rome (Rome : 3rd-6th centuries)1
- Germany--Mainz (Rhineland-Palatinate)1
- Gifts1
- Giovanna II, Queen of Naples, 1371-14351
- Graduals (Liturgical books)1
- Graham, Patrick Graham, Lord, -14661
- Grazing1
- Gregorian chants--Manuscripts1
- Head--Wounds and injuries1
- Heart--Diseases1
- Henry IV, King of Castile and Leon, 1425-14741
- Heroides (Ovid)1
- Holy Cross1