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Territorial evolution of the United States - Wikipedia
Maps of United States - Early America 1400-1800
United States, 1800 - Educational Technology Clearinghouse
US Map Collection - Old Historical U.S. and State Maps
United States Historical Maps - Perry-Castañeda Map Collection
The United States, 1800 - Educational Technology Clearinghouse
USA Historical Map | MapChart
Map of the USA in 1800 - Edmaps.com
The United States, 1600–1800 A.D. - Google My Maps
Free Old Maps of United States – Old Maps of USA - Century Past