Year: 1916 / Publisher: State Geological Survey (Urbana, Ill.) / Provider: University of Illinois Urbana-Champaign - GeoBlacklight Search Results

Start Over Year 1916 Publisher State Geological Survey (Urbana, Ill.) Provider University of Illinois Urbana-Champaign

1. Illinois, Marseilles quadrangle : topography.

1916. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).

2. Illinois-Iowa, Edgington quadrangle : topography

1916. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).