Note from the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va., Organ Historical Society, 1991). Edited for the revised OHS Online Database website, July 2017. -

Succeeded Matthias Schwab firm; partnership of Johann H. Koehnken, Gallus Grimm and Frederick P. Denghausen in Cincinnati, Ohio, 1860-1876; Denghausen left firm, 1864; succeeded by Koehnken & Grimm.

Staff: Sebastian Christel; H. B. Eckelmann; James Fink; Conrad Forischon; H. Freulke; John Glunz; Gebhardt Grimm; Ignatz; Christian Jacob; Moser; Engelbert Schafer; John Scheinhof; August Siedle; Christoph Stever; Aaron Wertheimer.

Source:

• Kenneth Wayne Hart, "Cincinnati Organ Builders of the Nineteenth Century" part 3, The Tracker 21:1 (Richmond, Va.: Organ Historical Society, 1976), 5.
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For further information, see: Matthias Schwab and Koehnken & Grimm