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The first house built in town. It was home to Thomas V. Cooper who was state legislature and president of the Pennsylvania State Senate.
This Armory houses the collection of rifles known as the Cooper Rifles. It was also used to house Company M, 111th Infantry, and Pennsylvania National Guard.
Founded in 1867, "to promote for the people of Delaware Country, the study and diffusion of general knowledge". It stands as a museum for natural and area history.