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  1. Io I
  2. The Rosetta Stone
  3. Toad of Toad Hall
  4. Pinned broken leg, X-ray
  5. The Discovery Of Nat Turner
  6. Beyond Our Solar System V
  7. American History print of President George Washington and his family
  8. Colorized scanning electron micrograph of filamentous Ebola virus particles
  9. Meandering Mississippi - USGS Earth as Art
  10. The sun sets behind a row of spinning windmills or wind turbines
  11. The Sun I
  12. Anterior neck and facial muscles of the human head (with labels)
  13. United States Fun Facts
  14. Map of Armenia, Colchis, Iberia and Albania
  15. Printing Press
  16. Solar System - Brown
  17. Abraham Lincoln
  18. Boxing
  19. The Sun
  20. Upper body bones, computer artwork.
  21. Neanderthals hunt a cave bear
  22. Wire Frame Render of a Clock Mechanism, Close-up
  23. Titan II
  24. Internal view of the human heart
  25. The musculoskeletal system
  26. Portrait of Patrick Henry (1736-99)
  27. Abraham Lincoln Portrait, 1863
  28. Mushroom Chart III
  29. The Sun III
  30. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  31. General George Patton during a ticker tape parade
  32. Lumbar vertebra
  33. Alaska - USGS State Mosaic
  34. Officers of 4th New Jersey Infantry, American Civil War
  35. First Letter Carried By Pony Express
  36. Houdini Diver Suit
  37. The bones of the neck
  38. Mark Twain , 1901
  39. The Syrian Desert - USGS Earth as Art
  40. Apollo 13
  41. Cartilage cells, TEM
  42. Cross section biomedical illustration of pulp and root abscess in molar
  43. Every Child Deserves A Great School
  44. Spruce Goose - Hughes H-4 Hercules Blueprint: Retro Travel Poster
  45. Spirit And Opportunity, Mars Exploration Rover Project
  46. Presidential portrait of Jimmy Carter
  47. Skeleton Chart
  48. Bomjamin