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Start Over Year 1913 Publisher State Geological Survey (Urbana, Ill.) Provider University of Illinois Urbana-Champaign

1. Illinois, Sumner quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1913. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1911.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours.;1 map, colored;45 x 3... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).

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