1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1946.";Relie... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
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1949. Parvis, M. Blueline. 'Prepared under the supervision of: M. Parvis.' Scale approximately 1:63,360; Polyconic proj. By State Highway Commission of Indiana at P... State Highway Commission of Indiana.
1949. Blueline print. 'State roads revised to January 1, 1949.' 'Service discontinued on Indiana Service Corporation between Peru & Ft. Wayne September 1... State Highway Commission of Indiana.
1949. Blue line print. 'State roads revised January 1, 1949.' '1937.' 'Data obtained from Statewide Highway Planning Survey.' '3.' Includes location map.... The Commission.
1949. Blueline. 'State roads revised to January 1, 1949.' '1937.' 'Data obtained from 'Statewide Highway Planning Survey.' '5.' Includes location map, ch... State Highway Commission of Indiana.
1949. Blueline. 'State roads revised to January 1, 1949.' '1937.' 'Data obtained from 'Statewide Highway Planning Survey.' '8.' Includes location map and... State Highway Commission of Indiana.
1949. Blueline. 'State roads revised to January 1, 1949.' '1937.' 'Data obtained from 'Statewide Highway Planning Survey.' '9.' Includes location map and... State Highway Commission of Indiana.
1949. Blueline.; State roads revised to January 1, 1949.; 1937.; Data obtained from Statewide Highway Planning Survey.; Includes location map and chart o... State Highway Commission of Indiana.
1949. Blueline. 'State roads revised to January 1, 1949.' '1937.' 'Data obtained from 'Statewide Highway Planning Survey.' '12.' Includes location map an... State Highway Commission of Indiana.
1949. Blueline.; State roads revised to January 1, 1949.; 1937.; Data obtained from Statewide Highway Planning Survey.; 14.; Includes location map, inset... State Highway Commission of Indiana.