The Henry Charles Lea Library Microfilm Collection is a composite of archival manuscript and printed material gathered by Kenneth M. Setton during his tenure as Henry Charles Lea Professor of History at the University of Pennsylvania. As such the collection reflects the contours of his research in Levantine diplomatic relations with Byzantium and the Papacy, as well as the Crusades. As a result, the collection contains only selected portions of major archival series, isolated source texts, as well as assorted miscellanies.