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Territorial evolution of the United States - Wikipedia
Maps of United States - Growth of Nation
Map, Available Online, 1840, United States, Maps, Manuscript
USA Historical Map | MapChart
United States Historical Maps - Perry-Castañeda Map Collection
The United States, 1840 - Educational Technology Clearinghouse
The United States, 1840 - Educational Technology Clearinghouse
Map, Available Online, 1840 - Library of Congress
1840 US Map :: 1840 Map of the U.S. :: 1840 Map of the United States
A Map of the United States 1845-1866 | Gilder Lehrman Institute …