Pine tree samples prove that Mackinac Island home was built in 1790

MACKINAC ISLAND, Mich. – Tree samples of a Mackinac home have revealed that a house on the Michigan island was built in 1790. The McGulpin House, located at Fort and Market Streets, has been reported as one of the oldest residential structures on Mackinac Island. The Great Lakes Dendrochronology collected 38 tree samples from the house and the Officers’ Stone Quarters, located right outside Fort Mackinac. The house made out of pine has tree rings that indicate that the timber used as the house’s foundation is from 1790. The Mackinac Associates stated that there are rings that indicate years before…