United States. Geological Survey. U.S.G.S. Alternate title: Plainfield. In upper margin: Topography. Relief shown by 10 feet countour intervals. Triangulation by the U.S. Coast and Geodetic Survey. Topography by the Geological Survey of New Jersey. Surveyed in 1887. Culture revised in 1899. Verso: legend and explanatory notes, "Description of the topographic map of the United States".