col. map 126 x 74 cm. fold. in envelope 30 x 24 cm.; Reprint 1988; An overprint of the 1:500,000-scale state base map. Shows counties, location, and names of all cities and towns and most of the smaller settlements, railroads, and township and range lines in black; water features in blue; hydrologic boundaries and codes in red; county codes in green. No contours. Sheet 31 by 52 inches. 1972 base.