1917. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).
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1917. Geological Survey (U.S.). Surveyed in 1914.;"Surveyed in cooperation with the State of Illinois.";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.).
1917. Geological Survey (U.S.). Surveyed in 1914-1915.;"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1917. Geological Survey (U.S.). Relief shown by contours and spot heights.; Inset: Principal islands of Hawaii. 86 x 113 centimeters Scale 1:62,500 General Map Collection. The Survey (Washington, D.C).
1917. Geological Survey (U.S.). Relief shown by contours.; Contour interval 5 feet.; "Surveyed in 1916." 141 x 63 centimeters Scale approximately 1:21,120; 3 inch to 1 miles City ... U.S. Geological Survey (Washington, D.C).
1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).
1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).
1917. Geological Survey (U.S.). Relief shown by contours and spot heights.; Includes notes. 117 x 106 centimeters Scale 1:31,680 General Map Collection. Department of the Interior, U.S. Geological Survey (Washington).