The earliest people that lived in northern Dutchess County were the Mohicans. They were a Native American nation that came to the area about 3,000 years ago. There were around 8,000 Mohicans during the time they first saw the Europeans. However, there were only 800 after the American Revolution. Artifacts were found along the shore of Lake Sepasco, which is a small lake near NY 308. The artifacts included very old arrowheads, and are now being shown at a local museum. 