2004-10-30/2019-09-28 - 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). — Son of Walter Holtkamp, Jr.; entered Holtkamp Organ Co. ca. 1987; President and Managing Director from 1995. Sources: American Institute of Organbuilders (AIO): 1996 membership directory. John Panning.
2010-10-10/2020-04-09 - For information on the company, Holtkamp Organ Co.
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