I have a journal from the 1870s written by a local businessman (Civil War veteran). In 1876, he visited the Remington factory in New York. This is what he wrote (short but interesting):
Monday, Sept 4th, 1876
Today I visited the extensive armory of Remingon & Co at llion. I obtained a passing glance at the various mechanical processes by which rifles and guns are made, but so extensive are these works & so numerous the various machines, that it was only a glance that was obtained during the 2 or 3 hours that I was there.