2004-10-30/2019-04-29 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). - Born August 14, 1819 in Altenbulstedt, Saxony, Germany; cabinetmaker; immigrated to Wheeling, West Virginia, 1837; with Mathias Schwab firm of Cincinnati, Ohio, 1839; acquired firm as Koehnken & Co. with Gallus Grimm and Frederick T. Denghausen, 1860; partner with Gallus Grimm in Koehnken & Grimm of Cincinnati, Ohio, 1875-1896; retired 1896, succeeded by Gallus Grimm; died February 23, 1897 in Cincinnati, Ohio. Sources: Orpha Ochse, The History of the Organ in the United States (Bloomington: Indiana University Press, 1975), 184. The Tracker: 21:1:4.
2018-05-07/2020-04-09 - From the OHS PC Database, (James H. Cook and Elizabeth Towne Schmitt, co-editors). — Byron J. Board, grandson of Koehnken, was supposed to have had his grandfather's account books. Source not listed, presumed to be personal knowledge of the editors or information supplied to them by an unnamed person.
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