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History of Washington, D.C. - Wikipedia
The History of Washington, DC
Washington, D.C. - Capital, Founding, Monumental | Britannica
Washington, D.C. - HISTORY
Washington, D.C. | History, Map, Population, & Facts
Washington, D.C. - History and Heritage | Smithsonian
Washington, D.C. history and famous landmarks | Britannica
Guides: Washington, D.C., History Resources: Timeline
A (Brief) History of Washington DC: Home to the US Presidents
DC History Timeline