Newspaper clipping, [Galvanic Battery Newspaper Testimonials], 1842.
These materials are owned by the American Catholic Historical Society and maintained at the Philadelphia Archdiocesan Historical Research Center, 100 E. Wynnewood Rd. Wynnewood, PA 19096. For more information please see: http://www.pahrc.net. [1/5/6].
Philadelphia : Pennsylvania Inquirer and National Gazette.