2004-10-30/2019-09-16 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — Active in Baltimore, Maryland, c. 1842- c. 1847? Source: Thomas S. Eader, "The Baltimore Organ Builders", The Tracker 2:3 (Governors Island, New York.: Organ Historical Society, 1958), 3.
2019-09-17/2019-09-17 - From Organ Database Builders editor Stephen Hall, September 16, 2019. — The text from Eader's article, "The Baltimore Organ Builders" runs as follows: "Craig's Business Directory lists in 1842 a Henry Judge at 15 Holiday Street as an organ builder and instrument maker." The 1847 end date is from Fox's Guide, but the source is not given.
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