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Illinois Maps Topograp... (1)
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Savanna (Ill.); Iowa M... (1)

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 Image: Title: Subject: Description:
1. Iowa-Illinois, Goose Lake sheet : reconnaissance map Iowa-Illinois, Goose Lake sheet : reconnaissance map Illinois; Maps; Topographic maps; Topography; Goose Lake; Iowa 1 map : col.; Relief shown by contours.; "Surveyed in 1890."; "Contour interval 20 feet."
2. Iowa-Illinois, Savanna sheet : reconnaissance map Iowa-Illinois, Savanna sheet : reconnaissance map Savanna (Ill.); Iowa; Maps; Topographic maps; Topography; Illinois 1 map : col.; Relief shown by contours.; "Surveyed in 1890."; "Contour interval 20 feet."
3. Iowa-Illinois, Davenport sheet : reconnaissance map Iowa-Illinois, Davenport sheet : reconnaissance map Illinois; Maps; Topographic maps; Topography; Iowa; Davenport 1 map : col.; Relief shown by contours and spot heights.; "Surveyed in 1889."; "Contour interval 20 feet."
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