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131. Illinois, Vermont quadrangle : topography

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1921. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1916 and 1919.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heig... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

132. Illinois, Vienna quadrangle : topography

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1919. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1916.";"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.).

133. Illinois, Virginia quadrangle

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1936. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1928 and 1932."; (W 90⁰15ʹ00ʺ--W 90⁰00ʹ00ʺ/N 40⁰00ʹ00ʺ--N 39⁰45ʹ00ʺ);Relief shown by contours and spot heigh... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

134. Illinois (Warren County), Monmouth quadrangle

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1923. Geological Survey (U.S.). Surveyed in 1920-1921.; (W 90⁰45ʹ00ʺ--W 90⁰30ʹ00ʺ/N 41⁰00ʹ00ʺ--N 40⁰45ʹ00ʺ);Contour interval 20 feet.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

135. Illinois, Waterloo quadrangle : topography

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1913. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1910.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

136. Illinois, Waverly quadrangle

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1926. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1922 and 1924.";Relief shown by contours and spot heights.;Shows roadway classification as of Oct., 1925.;Te... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

137. Illinois, Wayne City quadrangle : 15-minute series

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1947. Geological Survey (U.S.). Contour interval 20 feet.;"Mapped by the Geological Survey 1945";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.).

138. Illinois, Wenona quadrangle

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1939. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1933-1934.";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.).

139. Illinois, West Frankfort quadrangle : topography

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1909. Geological Survey (U.S.). 1 map, colored;Relief indicated by contours and spot heights.;Contour interval 20 feet.;"Surveyed in 1906-1907.";Surveyed in cooperation with the S... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

140. Illinois, Wheaton quadrangle : topography

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1908. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1906.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).