2004-10-30/2019-10-29 - From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). — With Möller firm of Hagerstown, Maryland; died 1923. Source: The Diapason February 1924, 3.
2015-10-13/2019-10-29 - See main entry: M.P. Möller, Inc.
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