1974. Hutchison, Harold C. (Harold Christy),1925-cartographer. Blue line print. 'Base modified from Indiana Department of Conservation, Geological Survey. Base map of portion of western Indiana, 1951.' Includes... Indiana Department of Geology and Natural Resources.
2000. Eaton, Nathan (Cartographer) and Weber, Licia. Compilation complete through October 1997.' 'Base map digitized from 1:500,000 scale, 1978 U.S. Geological Survey map of Indiana.' Includes text an... Indiana Geological Survey.
1887. Longyear, John Munro, 1850-1922, compiler.,Allis, Edward P. (Edward Phelps), 1824-1889, publisher.,Merrell, H. B. (Harvey B.), publisher.,Case, J. M. (Julian M.), -1890, compiler.,Beck & Pauli, lithographer. Shows lands of Allis & Merrell in green, and of Case & Longyear in red. Also shows mines and mineral explorations, iron ranges, existing and projec...