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  1. Pietersite
  2. Famous prehistoric rock paintings of Tassili N'Ajjer, Algeria
  3. Stacked Agate I
  4. Stethoscope
  5. Arthritis of the knee, X-ray
  6. Stacked Agate II
  7. Vintage Civil War print of Abraham Lincoln riding on horseback as a crowd cheers
  8. Colon blood vessels, light micrograph
  9. Lena Delta - USGS Earth as Art
  10. Indigo Agate C
  11. South American Independence
  12. Apache Men, c1906
  13. Mushroom Chart I light
  14. Austenaco, Great Warrior, Commander in Chief of the Cherokee Nation
  15. A composite showing different stages of the 2010 solstice total moon eclipse
  16. Flatboat, 19th Century
  17. Spatial dimensions, conceptual artwork
  18. Photograph of logarithmic slide rule
  19. Ball Play Of the Choctaw, 1840s
  20. Agate Studies IV
  21. Vitruvian Skeleton
  22. Portrait Of Harriet Tubman, 1868-69
  23. Map Of the Battle Of Gettysburg, 1863
  24. General Curtis LeMay and President Kennedy
  25. The Planets, excluding Pluto
  26. The Quack Frog, illustration from Aesop's Fables
  27. Blackfoot Native American
  28. Watercolor Agate I
  29. The Rainforest
  30. Living Relatives of Dinoaurs
  31. Agate Geode I
  32. Study of the Human Figure, Lateral View
  33. Solar System (Colored)
  34. Edwin Hubble's Galaxy Classification System
  35. Moss Agate
  36. Titanic survivors in lifeboat
  37. Frank Whittle's early development of the jet engine
  38. The Sinking of the Laconia in 1942
  39. Mars
  40. Bright Periodic Table - White, Modern Text
  41. A Mad Teaparty By Charles Folkard
  42. Houdini Diver Suit
  43. Desk Tools I
  44. Decorative Lintel from the ancient Mayan city of Yaxchilan, Chiapas, Mexico
  45. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  46. The bones of the jaw
  47. Von Karman Vortices - USGS Earth as Art
  48. Molecule THC