Park McFarland: Marriage Records of Gloria Dei Church "Old Swedes'," Philadelphia: Compiled from the Original Records. McFarland & Son, Philadelphia 1879, S.179 (google.com).
Peter A. Grotjan: "Sections from Memoirs of Peter A. Grotjan," published in Scandalmonger, by William Safire. 2001, ISBN 0-15-601323-1, S.487 (google.com).