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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. Portrait Of Harriet Tubman, 1870
  5. Remington, Cowboys, 1888
  6. Let Freedom Ring I
  7. Solar System - Minimal
  8. Normal spine, X-ray
  9. Tribute To Vikings
  10. Portrait of Chief Red Cloud in headdress
  11. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  12. The Doctrine of Monroe
  13. Plum Agate B
  14. Buffalo Hunt, 1830S
  15. Old Brass', a native North American, 19th century
  16. Mathematical Elements I
  17. World War II: Headline, 1941
  18. Earth Agate F
  19. Lincoln's Gettysburg Address
  20. Solar system
  21. The Hare and the Tortoise, illustration from Aesop's Fables
  22. Wild West
  23. Benjamin Franklin's face on the Hundred Dollar Bill
  24. Agate Studies III
  25. Saturn
  26. Portrait Of John Brown
  27. Ford Engine
  28. Light Bulb
  29. The First Reading of the Emancipation Proclamation Before the Cabinet
  30. Paul Revere By John Singleton Copley
  31. Let Freedom Ring II
  32. John Coltrane Playing The Soprano Saxophone, 1960's
  33. Composite of 90 different species of parrots
  34. Attorney And Client, Fortitude And Impatience. Illustration From The Book Bleak House
  35. Horse Chestnut - Botanical Illustration
  36. Obama: Believe
  37. Multiphoton fluorescence image of HeLa cells
  38. The Round-Up, 1888
  39. Apple Tree - Botanical Illustration
  40. The lumbar vertebrae
  41. Civil War painting of Union and Confederate troops fighting at The Battle of Bull Run
  42. Martin Luther King, Jr. (1929-1968)
  43. Math Formulas On Chalkboard
  44. Jupiter
  45. Be Whoo You Are
  46. Electric Coloured Sky
  47. Ra
  48. A Prehistoric Mammoth Hunt