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  1. Rainbow Ridge Picture Agate
  2. Pastel Periodic Table - Modern Text
  3. Vintage Civil War print of the Battle of Fredericksburg
  4. School Time, 1874, American painting
  5. Illustrated USA
  6. Pythagoras Maths Equation
  7. Civil War, Gettysburg, 1863
  8. Illustration showing the various parts that make up the sun
  9. Sioux Grass Dance, c1913
  10. The Historic Meeting Of The Union High Command During The American Civil War
  11. Tlazolteotl and Chalchiuhtlicue, Aztec Goddesses of Love and Water. 15th c. Codex Cospi
  12. External auditory canal of human ear (with labels)
  13. Chrysocolla
  14. The Nina, Pinta, And Santa Maria
  15. Egyptian and Assyrian counting systems
  16. Malachite
  17. Close Ups Of Fortification On Crazy Lace Agate
  18. Oil Pump Jacks On Canadian Prairie At Dusk, Carlyle, Saskatchewan, Canada
  19. Fascimile of a letter from Vincent Van Gogh to Emile Bernard on the 18th March 1888
  20. Signal Hill Oil Derricks
  21. Mohawk Village, 1780
  22. Inquiry in the Loss of the Titanic: Cross sections of the ship
  23. Hand doing math homework
  24. Armillary sphere
  25. Conceptual image of neuron
  26. Vintage Civil War print of Abraham Lincoln riding on horseback as a crowd cheers
  27. The Underground Railroad Aids With A Runaway Slave
  28. War of 1812 print at the Battle of New Orleans
  29. Pietersite
  30. Antique Stock Certificate IV
  31. Mushroom Chart I light
  32. A composite showing different stages of the 2010 solstice total moon eclipse
  33. Apache Men, c1906
  34. General Curtis LeMay and President Kennedy
  35. Colon blood vessels, light micrograph
  36. Photograph of logarithmic slide rule
  37. Flatboat, 19th Century
  38. Vintage American Civil War print of The Battle of Cherbourg
  39. Ball Play Of the Choctaw, 1840s
  40. Agate Studies IV
  41. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  42. Living Relatives of Dinoaurs
  43. Frank Whittle's early development of the jet engine
  44. The Sinking of the Laconia in 1942
  45. Purple Watercolor Agate I
  46. Bright Periodic Table - White, Modern Text
  47. Decorative Lintel from the ancient Mayan city of Yaxchilan, Chiapas, Mexico
  48. The bones of the jaw