George Rogers Clark National Historical Park, located in Vincennes, Indiana, on the banks of the Wabash River at what is believed to be the site of Fort Sackville, is a United States National Historical Park. President Calvin Coolidge authorized a classical memorial and President Franklin D. Roosevelt dedicated the completed structure in 1936. On February 25, 1779, Lieutenant Colonel George Rogers Clark, older brother of William Clark, lead the capture of Fort Sackville and British Lt. Governor Henry Hamilton as part of the celebrated Illinois Campaign, which lasted from 1778 to 1779.