File:USA Territorial Growth 1820 Alt.jpg
1970 USGS map
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This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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Other versions: 
Visually reorganized by Beyond My Ken (talk) 22:01, 18 April 2010 (UTC)
| US growth maps |
| Animated: large · small |
| Years |
| 1775 · 1790 · 1800 · 1810 · 1820 · 1830 · 1840 · 1850 · 1860 · 1870 · 1880 · 1900 · 1920 |
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