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  1. Armillary sphere
  2. Bogda Mountains - USGS Earth as Art
  3. Earth Agate A
  4. Pietersite
  5. Portrait Of Harriet Tubman, 1868-69
  6. Arthritis of the knee, X-ray
  7. A composite showing different stages of the 2010 solstice total moon eclipse
  8. Apache Men, c1906
  9. South American Independence
  10. General Curtis LeMay and President Kennedy
  11. Colon blood vessels, light micrograph
  12. Indigo Agate C
  13. Agate Geode I
  14. Earth Agate E
  15. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  16. The Planets, excluding Pluto
  17. Titanic survivors in lifeboat
  18. Moss Agate
  19. Von Karman Vortices - USGS Earth as Art
  20. The bones of the jaw
  21. Balance
  22. Desert to Forest - USGS Earth as Art
  23. Book
  24. RMS Titanic departing from Southanpton on her maiden voyage, April 5, 1912
  25. Women's Rights Parade, 1913
  26. Relaxing feet.
  27. Muhammad Ali on the shore of the Congo River, Kinshasa, Zaire
  28. Young boy in school writing on chalkboard
  29. States of the German Confederation
  30. Chinese acupuncture model
  31. College Graduation Ceremony
  32. No Man's Land - USGS Earth as Art
  33. The bones of the head, neck and face
  34. Blood clot, SEM
  35. Muir Woods National Monument, California - John Muir Portrait: Retro Poster
  36. Ocean Jasper
  37. Normal shoulder, X-ray
  38. Photomicroscopic close up of a snowflake crystal
  39. Martin Luther King, Jr. (1929-1968)
  40. Abraham Lincoln, 1809
  41. The bones of the pelvis
  42. Alberta, Reserve, c1890
  43. Meandering Mississippi - USGS Earth as Art
  44. Wingate Pass Agate, Ca
  45. Normal hip, X-ray
  46. Spilled Paint - USGS Earth as Art
  47. The sun sets behind a row of spinning windmills or wind turbines
  48. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings