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select all : clear all : add to favorites results 1-8 of 8 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next
 Image: Title: Subject: Description:
1. Wisconsin-Illinois, Monroe quadrangle : topography Wisconsin-Illinois, Monroe quadrangle : topography Monroe; Wisconsin; Illinois; Maps; Topographic maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1919-1920."; "Surveyed in cooperation with the States of Wisconsin and Illinois."; "Contour interval 20 feet."
2. Wapello quadrangle, Iowa-Illinois : 15 minute series (topographic) Wapello quadrangle, Iowa-Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Wapello (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods, 1946."; "Contour interval 10 feet."...
3. Tuscola quadrangle, Illinois : 15 minute series (topographic) Tuscola quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Tuscola (Ill.); Douglas County (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table methods 1935 and 1950."; "Contour interval...
4. Xenia quadrangle, Illinois : 15 minute series (topographic) Xenia quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Xenia (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1938 and 1949. Topography by plane-table surveys 1951-1952"; "Contour interval...
5. Walnut quadrangle, Illinois : 15 minute series (topographic) Walnut quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Walnut (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1937, 1939 and 1941. Topography by plane-table methods, 1947."; "Contour interval...
6. Villa Grove quadrangle, Illinois : 15 minute series (topographic) Villa Grove quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Villa Grove (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1953-1954. Topography by planetable surveys, 1956."; "Contour interval 10...
7. Wisconsin-Illinois, South Wayne quadrangle Wisconsin-Illinois, South Wayne quadrangle South Wayne; Wisconsin; Maps; Topographic maps; Topography; Illinois 1 map : col.; Relief shown in contours.; "Surveyed in 1921."; "Contour interval 20 feet."
8. Sibley quadrangle, Illinois : 15 minute series (topographic) Sibley quadrangle, Illinois : 15 minute series (topographic) Sibley (Ill.); Maps; Topographic maps; Topography; Illinois 1 map : col. ; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1940. Topography by plane-table methods 1947"; "Contour interval 10 feet."...
select all : clear all : add to favorites results 1-8 of 8 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next
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