Utica, New York, 1937–c.1956.
From the OHS PC Database, derived from A Guide to North American Organbuilders by David H. Fox (Organ Historical Society, 1991). —
E. C. Hertwig succeeded the Clarence F. Morey firm of Utica, New York, in 1937. He operated his own service firm in Utica until c. 1956.