Diffenderffer, Frank R. The german immigration into Pennsylvania through the Port of Philadelphia from 1700 to 1775 and the redemptioners Frank R. Diffenderffer - IX, 328 S. : Ill. 8° ISBN: 0-8063-0776-5 Subjects--Topical Terms: AmerikaPennsylvanienEinwanderungAuswanderungDeutschland