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  1. Native Americans Bringing Furs To Dutch Traders
  2. Prohibition Cartoon, 1920s
  3. Columbus, Map, 15th Century
  4. Marley's Ghost. Illustration for the novella A Christmas Carol
  5. Plan Of the Campaign In New York And New Jersey, 1776
  6. Human digestive system, with labels
  7. The nerve supply of the trunk
  8. Mars
  9. Grammar Lesson
  10. Rice Terraces, Longsheng Ping'an, Guangxi
  11. Molecule Milk
  12. Nikola Tesla With An Early Tesla Coil
  13. Poppy Jasper
  14. How Seeds Travel
  15. Portrait Of Ida B. Wells Barnett, 1893
  16. Taking Off..., illustration from 'Wings Across the World', 1978
  17. The Moon
  18. Alexander Mackenzie (1764-1820)
  19. Wheat Mower with Hat, Seen from Behind, by Vincent van Gogh, c. 1870-90
  20. Oregon. Close-up of Graveyard Point Plume Agate stone
  21. Costellazioni II
  22. Desk Tools II
  23. The Summit Of Little Round Top During the Battle Of Gettysburg, 1863
  24. The Rape of Europa
  25. Mushroom Chart III
  26. Men in Armour IV
  27. Parana River Delta - USGS Earth as Art
  28. Conceptual image of neuron
  29. American History print of President Washington and Lincoln
  30. The Best Teachers
  31. Fagin in the Condemned Cell. Illustration for the novel Oliver Twist
  32. The Summer Road
  33. Science classroom
  34. Utah - USGS State Mosaic
  35. Astronomical Chart I
  36. Alice and The Cheshire Cat
  37. Oregon, Owyhee. Close-up of picture jasper stone
  38. Miss Havisham. Illustration for the Charles Dickens novel Great Expectations 1910
  39. Sagenite On Mexican Agate
  40. Siberian Ribbons - USGS Earth as Art
  41. Scanning electron micrograph of HIV particles infecting a human H9 T cell
  42. Magic Money
  43. The Tea Party II
  44. Interiors of a library, Peabody Institute, Johns Hopkins University, Baltimore, Maryland
  45. Portrait of Ulysses S. Grant (1822-85)
  46. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings
  47. Andes - USGS Earth as Art
  48. Andalgalornis steulleti, a flightless predatory bird