Newest Sources

• Stump Speaking, or, the County Canvas
  ( Assumption College )
• Henry Clay, ca. 1815
  ( USDiplomacy.org )
• Portrait of Karl Marx
  ( Wikipedia )
• Opening shots at Lexington and Concord
  ( unknown )
• Portrait of Frederick Douglass
  ( National Archives )
• Portrait of Thomas Jefferson
  ( Library of Congress )
• The Shot Heard Round the World
  ( National Guard Image Gallery )
• New England Jumping into the Hand of George III
  ( History of the United States by Charles and Mary Beard )
• Portrait of George Washington
  ( Wikipedia )
• Wright Brothers First Flight
  ( Wikipedia )