2004-10-30/2019-09-19 - Note from the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va., Organ Historical Society, 1991). - Born c. 1836 in Pennsylvania; son of Henry Knauff Sr.; partner with his father, 1864. Source: Stephen L. Pinel, "Organbuilders and Their Families: in the Population Schedules of the Federal and State Census Surveys", The Tracker: 32:1 (Richmond, Va.: Organ Historical Society, 1988), 22.
2021-02-13/2021-02-13 - Listed as organist and choir director of St. Mark's Lutheran Church, Spring Garden Street above Thirteenth in *The Philadelphia Inquirer* in 1874 and 1878. -Paul R. Marchesano
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