This collection of merchant documents is essential reading for any student of economic developments in the Middle Ages who wishes to go beyond the level of textbook summaries. Different aspects of economic life in the Mediterranean world are delineated in the light of a rich variety of articles and other contemporary writings, drawn from Muslim and Christian sources. From commercial contracts, promissory notes, and judicial acts to working manuals of practical geography and philology, this volume of documents provides an unparalleled portrait of the world of medieval commerce.