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; rev. ed., 1997, with updated information). - Partner with Howard L. Gamble in Burness Associates of Philadelphia, PA, 1967; (in Gamble & Hallman of Glenside, PA, c. 1980s?); with Burness Associates by 1996. Sources: American Institute of Organbuilders (AIO): 1989, 1996 membership directories. The Diapason, December 1967, 18. A mailing list of purchasers of organ supplies compiled by several prominent firms. The entries that appear in this list are of undetermined date and may not necessarily represent organbuilders.
2018-12-18/2019-04-29 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). - Partner with Howard L. Gamble in Burness Associates (of Philadelphia, Pennsylvania?), 1967; (in Gamble & Hallman of Glenside, Pennsylvania, c. 1980s?); active in 1989. Sources:
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