The City of Ansonia, located in New Haven County on the Naugatuck River, is in the lower Naugatuck Valley region. Though its development as a village center started in the 1600s, it was not until 1864 that it was incorporated as a town, and in 1893 reincorporated as a city. Also referred to as the “Copper City,” Ansonia produced copper, brass, rubber, and plastics, among other manufacturing industries. It was the home of the well-known Ansonia Clock Company and the birthplace of Revolutionary War Colonel David Humphreys. The General David Humphreys House, headquarters for Derby Historical Society, is located on Elm Street in Ansonia, which is considered the "cradle'' of the Lower Naugatuck Valley.