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select all : clear all : add to favorites results 1-9 of 9 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next
 Image: Title: Subject: Description:
1. Colfax quadrangle, Illinois : 15 minute series Colfax quadrangle, Illinois : 15 minute series Illinois; Maps; Topographic maps; Topography; Colfax (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Contour interval 10 feet"; "Culture and drainage in part compiled from aerial photographs taken 1956. Topography by planetable surveys 1957."
2. Illinois, Rushville quadrangle Illinois, Rushville quadrangle Rushville (Ill.); Maps; Topographic maps; Topography; Illinois 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1922-1923"; "Contour interval 20 feet."
3. Illinois, Dongola quadrangle Illinois, Dongola quadrangle Illinois; Maps; Topographic maps; Topography; Dongola (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1919-1920, in cooperation with the State of Illinois."; "Contour interval 20 feet."
4. Flanagan quadrangle, Illinois : 15 minute series (topographic) Flanagan quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Flanagan (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1951. Topography by planetable surveys 1957-1958."; Contour interval 10 feet....
5. Illinois (Shelby Co.), Shelbyville quadrangle : 15-minute series Illinois (Shelby Co.), Shelbyville quadrangle : 15-minute series Shelbyville (Ill.); Shelby County (Ill.); Maps; Topographic maps; Topography; Illinois 1 map : col.; Relief shown by contours and spot heights.; "Mapped by the Geological Survey 1928, 1935 and 1942"; "Contour interval 20 feet."
6. Kenney quadrangle, Illinois : 15 minute series (topographic) Kenney quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Kenney (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Topography from aerial photographs by Kelsh plotter and by planetable surveys 1957. Aerial photographs taken 1956."; "Contour interval 10 feet."...
7. Maroa quadrangle, Illinois : 15 minute series (topographic). Maroa quadrangle, Illinois : 15 minute series (topographic). Maroa, Illinois; Maps; Topographic maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Topography from aerial photographs by Kelsh plotter and by planetable surveys 1956-1957. Aerial photographs taken 1956."; "Contour interval 10...
8. Paxton quadrangle, Illinois : 15 minute series (topographic). Paxton quadrangle, Illinois : 15 minute series (topographic). Paxton (Ill.); Illinois; Maps; Topographic maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1954. Topography by planetable surveys 1924, Revised 1956-1957"; "Contour...
9. Illinois, St. Elmo quadrangle : 15-minute series Illinois, St. Elmo quadrangle : 15-minute series Maps; Topographic maps; Topography; Illinois; Saint Elmo (Ill.); St. Elmo (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1939-1941"; "Contour interval 20 feet."
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