- Guidiccioni, Giovanni, 1500-15411
- Guyana1
- Gómez, Julián1
- Gómez, Martín1
- Gómez, Pedro (undifferentiated)1
- Hadith1
- Hadith--Texts1
- Harmonics (Ptolemy)1
- Hart, William, 15821
- Harville, Philippe de, active 15291
- Harville, Pierre de.--l. 15631
- Hawkins, John, Sir, 1532-15951
- Heinrich, der Jüngere, Duke of Brunswick-Wolfenbüttel, 1489-15681
- Herbals1
- Hertford, Katherine Seymour, Countess of, 1540-15681
- History, Ancient1
- History, Military1
- History--Sources1
- Holy Cross1
- Holy Roman Empire. Reichskammergericht1