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| From J. D. Dillenback & Co.'s 1870-1 Directory of the City of Grand Rapids |
Founded 1856 by James C. Simonds; changed name in 1887 to J. C. Simonds & Son; the son was Frank Simonds. In 1891 they employed 9 workers. The factory was known as the Excelsior Machine Shop.
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| From the 1882 book, Grimshaw on Saws |