2004-10-30/2019-04-29 - 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 Koehnken & Co.; partnership of Johann H. Koehnken and Gallus Grimm in Cincinnati, Ohio, 1876–1896; Frederick T. Denghausen was a partner, 1860–1864; succeeded by G. Grimm & Son. Sources:
2015-10-16/2020-04-09 - See also: Koehnken & Co. and G. Grimm & Son
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