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121. Illinois, Mattoon quadrangle

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1937. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.";Relief shown by contours a... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

122. Illinois, McLeansboro quadrangle : 15-minute series.

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1945. Geological Survey (U.S.). Contour interval 20 feet.;"Mapped by the Geological Survey 1942";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

123. Illinois, Meredosia quadrangle

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1931. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1926, 1927, and 1928";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

124. Illinois, Metamora sheet

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1893. Geological Survey (U.S.). Surveyed in 1891.;Relief indicated by contours.;Contour interval 10 feet.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).

125. Illinois, Monticello quadrangle : 15 minute series.

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1943. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1936 and 1937, Culture revised in part, 1942";Relief shown by contours and spot heights.;1 map, colored;45 x... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

126. Illinois, Morris quadrangle : topography

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1918. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1915.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

127. Illinois, Morrison quadrangle

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1940. Geological Survey (U.S.). Contour interval 20 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1927 and 1933-... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

128. Illinois, Mount Olive quadrangle : topography.

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1915. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913";"Surveyed in cooperation with the State of Illinois."; (W 89⁰45ʹ00ʺ--W 89⁰30ʹ00ʺ/N 39⁰15ʹ00ʺ--N 39⁰00ʹ... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

129. Illinois, Mount Vernon quadrangle.

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1940. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1928, 1930, 1932, and 1933";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

130. Illinois, Mt. Carroll quadrangle : 15-minute series.

Maps University Of Illinois Urbana Champaign Public content
1944. Geological Survey (U.S.). Contour interval 20 feet;"Surveyed in 1939, 1940, and 1942";Relief shown by contours and spot heights.;Road classification as of 1943.;1 map, color... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).