- Jews--Conversion to Christianity1
- Jews--Dietary laws1
- Job (Biblical figure)1
- John, the Apostle, Saint--Illustrations1
- Judaism1
- Judaism (Christian theology)1
- Judaism--Prayers and devotions1
- Jugurthine War, 111-105 B.C--Early works to 18001
- Julian, of Eclanum, Bishop, 380-approximately 4551
- Justinian I, Emperor of the East, 483?-5651
- Kapitalbünde1
- Knights and knighthood1
- Labyrinths1
- Lamucci, Corso1
- Landlord and tenant1
- Language and languages1
- Language and languages--Philosophy1
- Lanvers, Hamo1
- Lapidaries (Medieval literature)1
- Lathom, Robert de, 13th century1