Bücher der Reihe Urkunden zur alteren Handels- und Staatsgeschichte der Republik Venedig 3 Volume Set

Published in 1856-7, this three-volume collection of Latin and Greek primary sources focuses on political and economic relations between Venice and Constantinople from the early ninth century to 1299. Volume 2 covers the period 1205-55 and focuses on the fate of Constantinople and the interests of the Papacy.