Prepared under the direction of the Chief of Engineers, U. S. Army, 1943. Army Map Service, Quincy unit. At head of map: Michigan 1:62,500. Filing title: Niles, Mich.-Ind. First edition [1943]--AMS 1. Polyconic projection. Relief shown by contours and spot heights. Contour interval 20 feet. "First Edition 1943." "Based on U.S.G.S. quadrangle, Niles, 1:62,500 (1930). Control by U.S. Geological Survey. Surveyed in cooperation with the State of Michigan, 1927. Revised from single lens vertical aerial photographs. Aerial photography - A. A. A. Department of Agriculture, 1938." "N4145-W8615/15." Imprint: Washington, D.C. : Army Map Service, U.S. Army, 1943 Dimensions: 45 x 42 cm or smaller