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  1. Mushroom Chart I light
  2. A composite showing different stages of the 2010 solstice total moon eclipse
  3. Apache Men, c1906
  4. Stethoscope
  5. Arthritis of the knee, X-ray
  6. South American Independence
  7. Famous prehistoric rock paintings of Tassili N'Ajjer, Algeria
  8. General Curtis LeMay and President Kennedy
  9. Colon blood vessels, light micrograph
  10. Space Suit
  11. Spatial dimensions, conceptual artwork
  12. Flatboat, 19th Century
  13. Ball Play Of the Choctaw, 1840s
  14. Vintage American Civil War print of The Battle of Cherbourg
  15. Austenaco, Great Warrior, Commander in Chief of the Cherokee Nation
  16. Photograph of logarithmic slide rule
  17. The Quack Frog, illustration from Aesop's Fables
  18. Stacked Agate I
  19. Indigo Agate C
  20. Watercolor Agate I
  21. Agate Geode I
  22. Study of the Human Figure, Lateral View
  23. Stacked Agate II
  24. Agate Studies IV
  25. Earth Agate E
  26. Solar System (Colored)
  27. The Planets, excluding Pluto
  28. The Rainforest
  29. Living Relatives of Dinoaurs
  30. Superior view of human brain with colored lobes and labels
  31. Titanic survivors in lifeboat
  32. A Mad Teaparty By Charles Folkard
  33. Vitruvian Skeleton
  34. Houdini Diver Suit
  35. The Sinking of the Laconia in 1942
  36. Frank Whittle's early development of the jet engine
  37. Mars
  38. Purple Watercolor Agate I
  39. Desk Tools I
  40. Moss Agate
  41. Bright Periodic Table - White, Modern Text
  42. Decorative Lintel from the ancient Mayan city of Yaxchilan, Chiapas, Mexico
  43. Map Of the Battle Of Gettysburg, 1863
  44. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  45. Von Karman Vortices - USGS Earth as Art
  46. Sohrab Facing the Tent of the Persian Army Leaders. Shahnameh. The Book of Kings. 16th c
  47. The bones of the jaw
  48. Pi to 2198 decimal place