Statistics for occurrence #1 of “West Troy” in entry cannon of Harper's Encyclopedia of United States History:

...lt and mounted at Fort Lafayette (founded on invention of D. M. Mefford, of Ohio), 1885. Congress makes an appropriation for the establishment of a plant for gunmaking at the Watervliet arsenal, West Troy , 1889. Manufacture of heavy ordnance begun at the Washington navy-yard, 1890. Hotchkiss gun, English make, five barrels, revolving around a common axis, placed upon block weighing about 386 t...
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