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  1. Category : Historical flag maps of the United States - Wikimedia

  2. Flag Timeline - US History

  3. Category : Flag maps of the United States - Wikimedia

  4. List of flags of the United States - Wikipedia

  5. Map of the USA in 1845 - Edmaps.com

  6. A Map of the United States 1845-1866 | Gilder Lehrman Institute …

  7. Evolution of the American Flag - United States Flag

  8. File : Flag of the United States (1837–1845).svg - Wikipedia

  9. Facts about the United States Flag | Smithsonian Institution

  10. File:Flag of the United States (1845–1846).svg - Wikipedia