Search results for O'Hara, S.B   
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Illinois Maps Topograp... (1)
Illinois Maps Topograp... (1)

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1. Illinois, Arenzville quadrangle Illinois, Arenzville quadrangle Illinois; Maps; Topographic maps; Topography; Arenzville (Ill.) 1 map : col.; Relief shown by contours and spot heights.; Road classification 1932.; "Surveyed in 1927 and 1929."; "Contour interval 20 feet."
2. Illinois, Mackinaw quadrangle Illinois, Mackinaw quadrangle Illinois; Maps; Topographic maps; Topography; Mackinaw (Ill.) 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1927-1928"; "Contour interval 10 feet"; Shows roadway classification as of 1931.; Coordinates: (W 89⁰30ʹ00ʺ--W 89⁰15ʹ00ʺ/N...
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