From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991; rev. ed., 1997, with updated information). —

Born 1808 near Freiburg, Breisgau, Baden, Germany; Established firm in Cincinnati, Ohio, 1831; succeeded by Koehnken & Co., 1860; died [c.1863] age 55.

Staff: Gallus Grimm; mssr. Himmell; Johann H. Koehnken, John F. Scheinhoff.

Sources:

• Orpha Ochse, The History of the Organ in the United States (Bloomington: Indiana University Press, 1975), 184.
• Kenneth Wayne Hart, "Cincinnati Organ Builders of the Nineteenth Century" part 2, The Tracker 20:4 (Richmond, Va.: Organ Historical Society, 1976), 5.
• Kenneth Wayne Hart, "Cincinnati Organ Builders of the Nineteenth Century" part 3, The Tracker 21:1 (Richmond, Va.: Organ Historical Society, 1977), 4.