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  1. Rhodochrosite Mineral From China's Wuton Mine
  2. A diagram showing the phases of the Earths moon
  3. Vintage Civil War print of the Battle of Gettysburg
  4. Remington, Cowboys, 1888
  5. Let Freedom Ring I
  6. Solar System - Minimal
  7. Normal spine, X-ray
  8. Tribute To Vikings
  9. Portrait of Chief Red Cloud in headdress
  10. Mathematical Elements I
  11. World War II: Headline, 1941
  12. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  13. Plum Agate B
  14. The Doctrine of Monroe
  15. Buffalo Hunt, 1830S
  16. Old Brass', a native North American, 19th century
  17. In A Stampede
  18. Lincoln's Gettysburg Address
  19. Solar system
  20. Boho Periodic Table
  21. The Hare and the Tortoise, illustration from Aesop's Fables
  22. Light Bulb
  23. Wild West
  24. Earth Agate F
  25. Paul Revere By John Singleton Copley
  26. Agate Studies III
  27. Saturn
  28. Portrait Of John Brown
  29. John Coltrane Playing The Soprano Saxophone, 1960's
  30. The First Reading of the Emancipation Proclamation Before the Cabinet
  31. Ford Engine
  32. Benjamin Franklin's face on the Hundred Dollar Bill
  33. Let Freedom Ring II
  34. Horse Chestnut - Botanical Illustration
  35. Composite of 90 different species of parrots
  36. Attorney And Client, Fortitude And Impatience. Illustration From The Book Bleak House
  37. Apple Tree - Botanical Illustration
  38. Obama: Believe
  39. The Round-Up, 1888
  40. Multiphoton fluorescence image of HeLa cells
  41. The lumbar vertebrae
  42. Civil War painting of Union and Confederate troops fighting at The Battle of Bull Run
  43. Math Formulas On Chalkboard
  44. Be Whoo You Are
  45. Jupiter
  46. Electric Coloured Sky
  47. Ra
  48. A Prehistoric Mammoth Hunt