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  1. Signing the Declaration of Independence, 4th July 1776, c.1817
  2. Solar System 1
  3. Declaration Of Independence
  4. Bright Periodic Table - Navy, Modern Text
  5. Rosie The Riveter vintage war poster from World War II
  6. Timeline of Life on Earth
  7. Antique Periodic Table - Classic Text
  8. Antique Periodic Table
  9. Zulu Warriors
  10. Napoleon Bonaparte at the Royal Military School of Brienne
  11. Egyptian Papyrus
  12. Fortifications Crazy Lace Agate
  13. The Entrance of Joan of Arc into Orleans on 8th May 1429
  14. Civil War painting of Union and Confederate troops fighting at The Battle of Antietam
  15. Zulu Warrior
  16. George Washington By Gilbert Stuart
  17. Solar System III
  18. Composite of 110 different species of ducks and geese
  19. Electromagnetism
  20. 1938 Character Culture Citizenship Guide Poster, Read Good Books
  21. Albert Einstein
  22. Condor Agate With Fortifcations
  23. Neon Periodic Table
  24. Cherry Creek Jasper
  25. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper stone
  26. Meat For the Tribe, 1891
  27. Prague Astronomical Clock
  28. Davy Crockett: Hero of the Alamo
  29. Explorers Wanted on the Journey to Mars
  30. Coral Reef
  31. Andrew Jackson, by Thomas Sully, 1845
  32. Underground Railroad Map
  33. Pharoahs of Egypt
  34. Spanish Conquistadors
  35. Close Ups Of Fortification On Crazy Lace Agate
  36. Pencils
  37. Ancient Egyptian Art
  38. Brain, artwork
  39. The Trenches
  40. Brain, artwork
  41. Let Freedom Ring I
  42. Normal spine, X-ray
  43. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  44. Paul Revere By John Singleton Copley
  45. Agate Studies III
  46. Saturn
  47. Let Freedom Ring II
  48. Be Whoo You Are