1. Mohammed and Charlemagne, Title: Mohammed and Charlemagne, Date: [1939] Author: Pirenne, Henri, 1862-1935. Collecting Area: Rare Books Call number: D 121 P52 1939A LOCAL
2. Medieval cities; their origins and the revival of trade, Title: Medieval cities; their origins and the revival of trade, Date: 1925. Author: Pirenne, Henri, 1862-1935. Collecting Area: Rare Books Call number: JS 61 P5 LOCAL