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  1. Proud to be an American I
  2. Civil War, Texas Rangers, 1861
  3. Muhammad Ali on the shore of the Congo River, Kinshasa, Zaire
  4. Alberta, Reserve, c1890
  5. Poppy Jasper
  6. Battle Of Saratoga, 1777
  7. Muir Woods National Monument, California - John Muir Portrait: Retro Poster
  8. Illustration From Grimm's Fairy Tale, The Three Little Men In The Wood
  9. The bones of the head, neck and face
  10. Normal hip, X-ray
  11. Bouncing ball
  12. Base of human skull, inferior view, with labels
  13. Artist's Rendering Of A Solar System
  14. Vintage American History painting of Alexander Hamilton
  15. Mistletoe - Botanical Illustration
  16. Signature of John Hancock
  17. Abraham Lincoln, 1809
  18. Microscopic view of bacteria
  19. Bright Periodic Table - White, Classic Text
  20. 'Rheumatoid arthritis of the hands, X-ray
  21. Capitol From the Botanical Gardens
  22. Wingate Pass Agate, Ca
  23. Illustration By Arthur Rackham From Grimm's Fairy Tale, The Cunning Little Tailor
  24. The bones of the pelvis
  25. Scrooge Objects to Christmas. Illustration for the novella A Christmas Carol
  26. Normal shoulder, X-ray
  27. Roman Roads
  28. Photomicroscopic close up of a snowflake crystal
  29. Shame may be Fatal - WPA Poster
  30. Florence Nightingale (1820-1910) illustration from World Noted Women
  31. Mohawk Village, 1780
  32. Denver, Colorado, 1859
  33. No Man's Land - USGS Earth as Art
  34. Mathematical Elements IV
  35. Portrait of Patrick Henry (1736-99)
  36. Replica Of Eli Whitney's Cotton Gin
  37. Solar System II
  38. Pair of human hands on black background.
  39. Hebrew Bible, 1299. Ark of the Covenant open showing Tablets of the Law
  40. Faridun's Sons Marry the Three Daughters of Sero. Shahnameh. The Book of Kings
  41. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings
  42. Pennsylvania, Gettysburg, Battle of Gettysburg, tree and battlefield monument, dawn
  43. Mexican Revolution (1910-19). Train with wounded revolutionary fighters
  44. Martin Luther King, Jr. (1929-1968)
  45. The Teacher
  46. The nerve supply of the trunk
  47. Indigo Agate D
  48. How Seeds Travel