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  1. Cyclopes
  2. Rosalind Franklin, British chemist
  3. Armillary sphere, 18th Century artwork
  4. Construction Of The Library Of Congress Photos May 4, 1892
  5. An Ioway Chief
  6. A Pawnee Brave
  7. Early electric train
  8. The Acropolis, and Lykabettos Hill, Athens, Greece, Europe
  9. Alvin Ailey (1931-1989)
  10. World War II poster of Uncle Sam's hand covering the mouth of a cartoon soldier
  11. Buttresses Under Foundation Of The Washington Monument
  12. Chuck Berry (1926-2017)
  13. World War II poster showing the head of a man with his mouth taped shut
  14. President Bill Clinton
  15. Duke Ellington (1899-1974)
  16. Statue of Abraham Lincoln
  17. 17th century map of the New World
  18. Cardo Maximus colonnaded street, Roman city, Jerash, Jordan
  19. Revolutionary War print of American minutemen being fired upon by British troops
  20. Fondoux el-Nejjarine, Fez, Morocco
  21. Mark Twain , 1901
  22. Duke Ellington (1899-1974)
  23. Ida B. Wells, 1891
  24. Telephone switchboard operator, 1914
  25. Abraham Lincoln
  26. Opening Of The Los Angeles Aqueduct
  27. National Security Council on Sept 12, 2001
  28. Interior, Valley of the Kings, Thebes, Egypt, Africa
  29. Russian Poster Worker Women
  30. Persepolis, Iran, Middle East
  31. Vintage World War I poster of Uncle Sam with a horse
  32. Marie Curie
  33. An Eight Year Old Farm Boy Sitting On A Horse Drawn Hay Rake, 1915
  34. Instruments for removing bladder stones
  35. Messenger Boy
  36. Fortifications in front of Atlanta, Georgia, during the American Civil War
  37. Bayon Temple reflected in water at Angkor, Siem Reap, Cambodia, Indochina
  38. Vicksburg Levee
  39. John Ernst Worrell Keely
  40. The Prince of Wales Hotel,and Vimy Peak, Waterton Lakes National Park, Alberta
  41. Statue of James Madison, Library of Congress, USA
  42. Morse code apparatus, historical artwork
  43. Wooden Gate At Resort
  44. Hotel House Astor, New York
  45. Distillation apparatus, 19th century
  46. Buttresses Under Foundation Of The Washington Monument
  47. Annie Oakley, 1860 - 1926, American Sharpshooter And Exhibition Shooter
  48. All-Star Game