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  1. Wyoming - USGS State Mosaic
  2. Molecule Testosterone
  3. David Copperfield. Illustration for the Charles Dickens novel David Copperfield
  4. Cingulate gyrus in the brain, artwork
  5. Oregon. Close-up of Owyhee Picture Jasper stone
  6. Mt. Etna - USGS Earth as Art
  7. Ambassador George Bush
  8. Boxing
  9. Molecule Estrogene
  10. Oregon - USGS State Mosaic
  11. Conceptual image of platelet, red blood cell and white blood cell
  12. San Luis, Argentina - USGS Earth as Art
  13. Rocky Mountains - USGS Earth as Art
  14. Illustration of strip of land known as the 'fertile crescent'
  15. Vintage Civil War Print of General Ulysses S. Grant
  16. Terracotta Army
  17. Internal view of the human heart
  18. Roof of the World - USGS Earth as Art
  19. Map of Palestine, Palestina Antiqua
  20. Neanderthals hunt a cave bear
  21. Peter and the Mermaids
  22. Male skeleton, computer artwork.
  23. Relief depiction of Ramses II, Temple of Luxor, Egypt
  24. Harriet Tubman, 1911
  25. Alice and the White Knight, from 'Alice in Wonderland' by Lewis Carroll
  26. Blood clot, SEM
  27. Marie Curie
  28. World War I, Map, c1918
  29. Book Cover of 'Jeanne d'Arc'
  30. Tyrannosaurus
  31. Ida B. Wells
  32. old-fashioned drawing compass
  33. Sigmund Freud
  34. Dice on math game
  35. Deinonychus
  36. Antique French Grape Press
  37. Lovecraft
  38. Anterior view of human skull, with labels
  39. Gold Leaf Agate
  40. Alaska - USGS State Mosaic
  41. Anterior neck and facial muscles of the human head (with labels)
  42. Barreal Blanco - USGS Earth as Art
  43. Map Of France, C.1900
  44. Solar System - Brown
  45. Be Creative
  46. Portrait of General William Tecumseh Sherman (1820-91)
  47. Yellowstone
  48. Knights of the Round Table