2018-05-07/2019-02-05 - From the OHS Database Builders Listing editor, May 29, 2016. — Sidney Madison was a service representative for M. P. Möller of Hagerstown, Maryland in Virginia in the 1950s.1 His apprentice, William Simonds, took over the business at some point; Simonds closed the business in 1978.2 Sources: "Pipe Organ Most Complex and Versatile Instrument" Progress-Index Petersburg, Virginia, May 23, 1954, 18. David Fox, A Guide to North American Organbuilders (OHS, 1997) 267.
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