2004-10-30/2019-10-07 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — With Hupalo Organ Pipe firm of Vernon, Connecticut, 1982.
2015-10-27/2019-10-07 - See Main Entry at John N. Hupalo (Organ Pipe Co.)
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