Cincinnati, Ohio, 1876–1896.
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.
There are 32 entries in the database that describe organs by Koehnken & Grimm.
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