1800-40FRONTIER.JPG (356 × 428 pixels, file size: 42 kilobytes, MIME type: image/jpeg)
Map of US frontier settlement, 1800-1840 based on US census
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|current||02:54, 4 December 2008||356 × 428 (42 kilobytes)||RJJensen||Map of US frontier settlement, 1800-1840 based on US census|
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