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