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Browse All : Images by George F. Cram Company from 1943
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Author
George F. Cram Company
Note
Date estimated. Has mileage tape anchored at Chicago for measuring air miles; also has air distances table. Mounted on linen with grommets for hanging. Cut into 28 panels with spaces to facilitate folded storage. Text describes advantages of Gingery projection based on dividing a 16-inch globe into 6 gores radiating from Chicago. Markable and erasable surface.
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