Lake Washington steamboats and ferries
Lake Washington steamboats and ferries operated from about 1875 to 1951, transporting passengers, vehicles and freight across Lake Washington, a large lake to the east of Seattle, Washington. Before modern highways and bridges were built, the only means of crossing the lake, other than the traditional canoe or rowboat, was by steamboat, and, later, by ferry.
Source: Wikipedia — Lake Washington steamboats and ferries (CC BY-SA 4.0)