Search results for 1931-1932   
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Illinois Maps Topograp... (1)
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1. Illinois, Prophetstown quadrangle. Illinois, Prophetstown quadrangle. Prophetstown (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 by Air Corps, U.S. Army"; "Surveyed in 1928 and 1931-1932"; "Contour interval...
2. Illinois-Iowa, Lomax quadrangle Illinois-Iowa, Lomax quadrangle Illinois; Maps; Topographic maps; Topography; Lomax; Iowa 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army"; "Surveyed in 1931-1932"; "Contour interval 10 feet";...
3. Illinois-Wisconsin, Pecatonica quadrangle. Illinois-Wisconsin, Pecatonica quadrangle. Pecatonica (Ill.); Illinois; Wisconsin; Maps; Topographic maps; Topography 1 map : col.; "Contour interval 10 feet"; "Surveyed in 1915 and 1931-1932"; Shows roadway classification as of 1935.; Coordinates: (W 89⁰30’00"--W 89⁰15’00"/N 42⁰30’00"--N 42⁰15’00")
4. Illinois, Potomac quadrangle. Illinois, Potomac quadrangle. Potomac (Ill.); Illinois; Maps; Topographic maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1931-1932"; "Contour interval 10 feet"; Shows roadway classification as of 1934.; (W 88⁰00ʹ00ʺ--W 87⁰45ʹ00ʺ/N 40⁰30ʹ00ʺ--N...
5. Illinois-Indiana, Marshall quadrangle. Illinois-Indiana, Marshall quadrangle. Marshall; Illinois; Indiana; Maps; Topographic Maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army"; "Surveyed in 1931-1932"; "Contour interval 10 feet."...
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