Arithmetic--Textbooks--Early works to 1900 Dunkard Brethren Ephrata Cloister Fraktur art--Pennsylvania Geomancy--Early works to 1800 German Americans--Music German Baptist Brethren (U.S.)--Pennsylvania German language--18th century--Dictionaries Germantown (Philadelphia, Pa.)--History--Colonial period, ca. 1600-1775 Hymns, German--Pennsylvania Hymns, German--United States--Texts Hymns--German--18th century Illumination of books and manuscripts, German Mathematics, German Mysticism--Germany--History Mysticism--United States--History Newspapers--German--18th century Pennsylvania--History--Colonial period, ca. 1600-1775 Pietism--United States--History--18th century Printing--United States--History--18th century Publishing--Periodicals--18th century Schwenkfelder Church Schwenkfelder Church--Catechisms Schwenkfelder Church--Catechisms--German Schwenkfelder Church--Hymns Schwenkfelder Church--Prayers and devotions Sermons, German--United States--Early works to 1800 Voyages and travels