Base map of Somerset County. Sheet two of a six sheet map. Prepared by the New Jersey State Highway Department, Division of Planning in cooperation with the U. S. Department of Commerce, Bureau of Public Roads. Series includes 12 insets of major road junctures. This sheet includes legend showing road system designations, railroads, road types, navigation and drainage, bridges and tunnels, boundaries, general culture features. State highways are as of July 1961.