Records of pastoral acts at the Lutheran and Reformed congregations of the Muddy Creek Church, East Cocalico Township, Lancaster County, Pennsylvania, 1730-1790
The Goodyear family : the descendants of Johann Christian Gutjahr & Margaretha Roesner (particularly their sons Frederick and Ludwig, with some references to sons John Christian, Jr., and George)
initial research done by Ralph Frederick and Clara H. Goodyear ; expanded by the cooperative work of numerous cousins ; as edited by Ralph W. Donnelly and Sarah E. Rivoir.