2004-10-30/2019-04-29 - From the OHS PC Database, derived from A Guide to North American Organbuilders by David H. Fox (Organ Historical Society, 1991). - Partnership of Nelson Barden and Kenneth Clark in Boston, 1960s. For more information, see entry at Nelson Barden Source: Letter to David H. Fox.
2015-08-26/2019-02-11 - From the OHS PC Database Builders Listing editor, March 16, 2016. - Partnership of Nelson Barden and Kenneth Clark in Boston, 1960s. They restored Ampico Reproducing Pianos and other automata. Later they began working with organ automated player systems beginning with the Welte Organ Company's Philharmonic Pipe Player Organ. After the partnership ended, Barden established Nelson Barden & Associates, in 1972; he relocated to Newton, Massachusetts, c. 1975; and was still active as of 2006. Sources: Jonathan Ambrosino, "Barden, Nelson C." in The Organ: An Encyclopedia edited by Douglas Bush & Richard Kassel (Utah and New York: Psychology Press, 2006), 48-49.
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