John Philip Holland
In 1835, Samuel Colt began producing firearms in Paterson, but within a few years he moved his business to Hartford, Connecticut. Later in the 19th century, Paterson was the site of early experiments with submarines by Irish-American inventor John Philip Holland. Two of Holland's early models—one found at the bottom of the Passaic River—are on display in the Paterson Museum, housed in the former Rogers Locomotive and Machine Works near the Passaic Falls.