2004-10-30/2019-04-29 - From the OHS PC Database, derived from A Guide to North American Organbuilders by David H. Fox (Organ Historical Society, 1997). - Established by David Richards in Pittsburgh, Pennsylvania, 1980; active 1993. Staff: David Haffey Source: Letter to David H. Fox.
2016-06-17/2019-04-29 - From the OHS Database Builders Listing Editor, June 17, 2016. - The Allegheny Organ Co. was established by David C. Richards in 1980, it remains active in 2016. The firm provides tuning, maintenance, and rebuilding services in Pennsylvania and adjoining states. It is currently located in Valencia, Pennsylvania, a small town to the north of Pittsburgh. Sources: Organ brochure for St. Agnes' Church, North Huntingdon, Pennsylvania, 2002. (on OHS Database website (http://database.organsociety.org/stoplists/PA/StAgnes_NorthHuntington.pdf) American Institute of Organbuilders, Membership directory, 2016.
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