Historical Documents

This map shows the land acquired through the Gadsden Purchase Treaty
ERA 4: Expansion and Reform (1801-1861), ERA 5: Civil War and Reconstruction (1850-1877)
ERA 7: The Emergence of Modern America (1890–1930)
ERA 9: Postwar United States (1945 to early 1970's)
President Carter and Omar Torrijos shaking hands after signing the Torrijos-Carter Treaties
ERA 10: Contemporary United States (1968 to the present)
Map of North America before the Mexican-American War
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861)
"Keep Off!" cartoon
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861)
Picture of Henry Teller, the author of the Teller Amendment
ERA 6: The Development of the Industrial United States (1870-1900), ERA 7: The Emergence of Modern America (1890–1930)

Collections

US Army helicopters fire into the tree line to cover South Vietnamese ground troops in March 1965
ERA 9: Postwar United States (1945 to early 1970's), ERA 10: Contemporary United States (1968 to the present)

Historical Images

Map showing Indian reservations within the limits of the United States : 1883
ERA 6: The Development of the Industrial United States (1870-1900)
HMS Jersey
ERA 3: Revolution and the New Nation (1754–1820s)
General Custer's death struggle. The battle of the Little Big Horn
ERA 6: The Development of the Industrial United States (1870-1900)