United States. Geological Survey. U.S.G.S. Alternate title: Rochester, N.Y. Relief shown by 20 feet contour interval. Surveyed in 1893-1894. Surveyed in cooperation with the State of New York. Culture revised in 1911 by Chas. E. Cooke. Triangulation by U.S. Lake Survey. Verso: The topographic maps of the United States.