Koeller—Mohammed and Mohammedanism. 8vo. London, 1889.

Kroeger—The Minnesingers of Germany. 8vo. New York, 1873.

Lacroix—The Arts of the Middle Ages. Folio. London.

Lane—Arabian Society in the Middle Ages. 8vo. London, 1883.

Lane—Manners and Customs of the Modern Egyptians. 2 vols. 8vo. London, 1842.

Lane-Poole—The Art of the Saracens in Egypt. 8vo. London, 1886.

Lane-Poole—The Speeches of Mohammed. 12mo. London, 1882.

Lea—History of Sacerdotal Celibacy. 8vo. Philadelphia, 1867.

Lea—Superstition and Force. 8vo. Philadelphia, 1866.

Lewis—An Essay on the Origin and Formation of the Romance Languages. 8vo. London, 1839.