"Entered according to Act of Congress in the year 1878, by G.F. Cram in the Office of the Librarian of Congress, at Washington, D.C., Imprint: Chicago : Geo. F. Cram, [1878], Dimensions: 48 x 32 cm; Scale: 1:1,203,840, Coordinates: W0880500 W0844700 N0414500 N0374600
Cram, George Franklin, 1841-1928 (1878). Cram's railroad and township map of Indiana. George F. Cram Company. https://purl.dlib.indiana.edu/iudl/images/VAC3073/VAC3073-M-00664 (map)