Articles

ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)

Historical Documents

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)
William Styron
ERA 4: Expansion and Reform (1801-1861)
Harriet Beecher Stowe
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)
No Annexation of Texas
ERA 4: Expansion and Reform (1801-1861)
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861), ERA 5: Civil War and Reconstruction (1850-1877)
ERA 4: Expansion and Reform (1801-1861)
Title Page
ERA 4: Expansion and Reform (1801-1861)
American Progress
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861), ERA 5: Civil War and Reconstruction (1850-1877), ERA 6: The Development of the Industrial United States (1870-1900), Multiple Eras
John F. Kennedy
ERA 4: Expansion and Reform (1801-1861), ERA 9: Postwar United States (1945 to early 1970's)
John L. O'Sullivan
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861), ERA 5: Civil War and Reconstruction (1850-1877), ERA 6: The Development of the Industrial United States (1870-1900)
ERA 4: Expansion and Reform (1801-1861)
Frederick J. Turner
ERA 4: Expansion and Reform (1801-1861)
ERA 4: Expansion and Reform (1801-1861)

Historical Images

A Breaking Scene of Western Pioneers
ERA 4: Expansion and Reform (1801-1861)
John Calvin
ERA 4: Expansion and Reform (1801-1861)

Collections

Chief Justice John Marshall
ERA 4: Expansion and Reform (1801-1861)
Nat Turner
ERA 4: Expansion and Reform (1801-1861)
The American Cowboy
ERA 3: Revolution and the New Nation (1754–1820s), ERA 4: Expansion and Reform (1801-1861), ERA 5: Civil War and Reconstruction (1850-1877), ERA 6: The Development of the Industrial United States (1870-1900), Multiple Eras
Daniel Boone Escorting the American Settlers Through the Cumberland Gap by George Caleb Bingham
ERA 4: Expansion and Reform (1801-1861)
Nat Turner
ERA 4: Expansion and Reform (1801-1861), ERA 10: Contemporary United States (1968 to the present)