2010-04-15/2019-02-11 - From the OHS PC Database, (James H. Cook and Elizabeth Towne Schmitt, co-editors), undated. - Listed as builder of 1918 organ in Richmond, Virginia. Source not listed, presumed to be personal knowledge of the editors or information supplied to them by an unnamed person.
2018-05-07/2019-04-29 - From the OHS Database Builders Listing editor, December 31, 2016. - Possible alternate nameplate for Barckhoff Organ Co. of Basic, Virginia. This date is roughly one year after C. E. Malarkey acquired the Barckhoff firm. Source: Vernon Brown, Carl Barckhoff and the Barckhoff Church Organ Company, (unpublished essay in the OHS Archives, undated).
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