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  1. Let Freedom Ring I
  2. Boho Periodic Table
  3. A diagram showing the phases of the Earths moon
  4. Normal spine, X-ray
  5. Remington, Cowboys, 1888
  6. Grey Agate B
  7. Brain, artwork
  8. Plum Agate B
  9. Solar System - Minimal
  10. Portrait of Chief Red Cloud in headdress
  11. Tribute To Vikings
  12. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  13. The Hare and the Tortoise, illustration from Aesop's Fables
  14. Mathematical Elements I
  15. The Doctrine of Monroe
  16. Let Freedom Ring II
  17. Paul Revere By John Singleton Copley
  18. World War II: Headline, 1941
  19. Old Brass', a native North American, 19th century
  20. In A Stampede
  21. Lincoln's Gettysburg Address
  22. Ra
  23. Wild West
  24. Light Bulb
  25. Portrait Of John Brown
  26. Buffalo Hunt, 1830S
  27. John Coltrane Playing The Soprano Saxophone, 1960's
  28. Saturn
  29. Elizabeth of Bourbon (1603-1644). Queen of Spain. Alcazar Castle, Segovia, Spain
  30. Solar system
  31. Ford Engine
  32. Earth Agate F
  33. Benjamin Franklin's face on the Hundred Dollar Bill
  34. Gas Station 66, Wild West Painting Series
  35. Agate Studies III
  36. Constitution of the united states of america
  37. Composite of 90 different species of parrots
  38. Attorney And Client, Fortitude And Impatience. Illustration From The Book Bleak House
  39. Horse Chestnut - Botanical Illustration
  40. Civil War painting of Union and Confederate troops fighting at The Battle of Bull Run
  41. Apple Tree - Botanical Illustration
  42. The First Reading of the Emancipation Proclamation Before the Cabinet
  43. The Round-Up, 1888
  44. Obama: Believe
  45. Math Formulas On Chalkboard
  46. Be Whoo You Are
  47. The lumbar vertebrae
  48. Jupiter