This book was commissioned by the Stadtmauer family of Riverdale. It is an extensive genealogical and historical investigation into the four lines of their paternal lineage including the Stadtmauer, Zimmerman, Kamelhar, and Schuldenfrei families as well as information concerning other related branches such the Muster, Traum, and Vogelfang families. The book contains comprehensive family trees, charts, and documents as well as rare photographs from the United States, Europe and Israel.