2004-10-30/2019-04-29 - Note from the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Organ Historical Society, 1991). Edited for the revised OHS Online Database website, 2017. - Ruth Grafeman was with E. R. Kilgen of St. Louis, Missouri, 1940s. Source: Elizabeth Towne Schitt.
2018-05-07/2020-04-09 - See Main Entry at E.R. Kilgen Organ Co. / Kilgen Organ Co.
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