2004-10-30/2019-12-09 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — Formerly Evenheeter Manufacturers; active in Milwaukee, Wisconsin, 1925, electric heaters for organ chambers; P. K. Cramblet. Staff: Ralph Grant. Source: The Diapason: May 1925, 6.
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