Search results for 1922-1923   
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Illinois Maps Topograp... (1)
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1. Illinois, Rushville quadrangle Illinois, Rushville quadrangle Rushville (Ill.); Maps; Topographic maps; Topography; Illinois Relief shown by contours and spot heights.; "Surveyed in 1922-1923"; "Contour interval 20 feet."

2. Illinois, Raymond quadrangle. Illinois, Raymond quadrangle. Raymond (Ill.); Illinois; Maps; Topographic maps; Topography Relief shown by contours and spot heights.; "Contour interval 10 feet."; "Surveyed in 1922-1923."

3. Illinois, Taylorville quadrangle Illinois, Taylorville quadrangle Maps; Topographic maps; Topography; Illinois; Taylorville (Ill.) Relief shown by contours and spot heights.; "Surveyed in 1922-1923."; "Contour interval 10 feet."

4. Illinois, Havana quadrangle Illinois, Havana quadrangle Illinois; Maps; Topographic maps; Topography; Havana (Ill.) Relief shown by contours and spot heights.; "Control in part by Illinois River Commission and Corps of Engineers U.S. Army."; "Surveyed in 1922-1923."; "Contour interval 20 feet." Coordinates: (W 90⁰15ʹ00ʺ--W...
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