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Start Over Place Iowa Publisher Geological Survey (U.S.)|State Geological Survey (Urbana, Ill.) Bounding Box -86.51116 39.149274 -86.508949 39.150938

1. Illinois-Iowa, Edgington quadrangle : topography

University Of Illinois Urbana Champaign Public content
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.)|State Geological Survey (Urbana, Ill.).

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