Blue line map. "May 1, 1951, revised January 1, 1968." Shows township and range numbers, section boundaries without numbers, State and National Forest boundaries, and city and town boundaries. Imprint: [Bloomington, Ind.?] : The Survey, 1968. Dimensions: 67 x 53 cm; Scale: 1:63,360 Coordinates: W0864100 W0861900 N0392100 N0390000