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  1. A Roman Chariot Race
  2. Bridge Over Tennessee River In Knoxville
  3. Brooklyn Bridge, New York
  4. Luna Park, Pittsburgh, Pa
  5. Vintage World War One photo of General John J. Pershing
  6. Durer's Celestial Globe, 1515
  7. Portrait Of The 1888 Supreme Court
  8. World War II poster featuring the three wise men riding camels
  9. Mushroom Cloud From Ivy Mike
  10. Honest Abe Lincoln
  11. Vintage Civil War print of the Battle of Fredericksburg
  12. Study for 'Light Battery at Gettysburg'
  13. President George Washington
  14. Barack Obama (1961- )
  15. Woodcut Illustration From Medieval Book
  16. Democratic presidential candidate Shirley Chisholm addresses students at Cal State
  17. President Dwight Eisenhower
  18. Muhammad Ali on the shore of the Congo River, Kinshasa, Zaire
  19. World War II poster of tanks rolling into battle and a locomotive in motion
  20. The German Airship, The Hindenburg, Above Manhattan, New York In 1936
  21. View Of Danzig, Poland From River, 1939
  22. Stonehenge, 17th century artwork
  23. Early map of the Moon, 1772
  24. Zen composition on pebble beach, small amphora on lies pebbles.
  25. Moultrie
  26. Sir Francis Drake's voyage 1585-1586
  27. Ernst Haeckel Map Lemuria Human Origins
  28. Charles (John Huffam) Dickens (1812-70), English author (B
  29. Rotunda At University Of Virginia
  30. Sioux Grass Dance, c1913
  31. RMS Titanic during fitting out, 01 January 1912
  32. Facade Of The Los Angeles Stock Exchange
  33. Ensisheim meteor fall, 1492
  34. Lincoln to Washington
  35. James Monroe, by Gilbert Stuart, 1817
  36. James Clark Ross discovers Antarctic Ice Shelf, January 1841, 2016
  37. Berlin Wall
  38. Sailing ships, statue of Christopher Columbus and American flag
  39. Vintage World War II poster showing the cartoon faces of Axis leaders
  40. Storefront in a ghost town
  41. Vintage WWI Military Propaganda Poster Of A Wounded American Soldier On The Battlefield
  42. Titanic survivors in lifeboat
  43. San Francisco Chronicle announcing the end of World War I, 1918
  44. Pima Ki By Edward S. Curtis
  45. Pennsylvania, Gettysburg, Battle of Gettysburg, tree and battlefield monument, dawn
  46. General Ulysses S. Grant leading Union troops into battle
  47. Classiebawn Castle With Ben Bulben In The Distance, Mullaghmore, County Sligo, Ireland
  48. Sunwatch Indian