Maps

Map of northern Italy. Source unknown.
A map of Italy around the twelfth and thirteenth centuries. From Muir’s Historical Atlas via Fordham University’s Medieval History Sourcebook.
A map detailing the members of the Lombard Leagues. From Wikipedia.
A map of Italy circa 1154. Courtesy of undevicesimus whose work can be seen here.
The routes taken by the Black Death around the West. From D. Cesana, O.J. Benedictow, and R. Bianucci, The Origin and Early Spread of the Black Death in Italy from here.