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  1. Constitution Document
  2. Native American Chiefs
  3. Tyrannosaurus Rex Study
  4. Constitution Document - Articles 1-7
  5. Signing the Declaration of Independence, 4th July 1776, c.1817
  6. United States Constitution - Horizontal
  7. Declaration of Independence Document
  8. United States Constitution
  9. The Bill Of Rights
  10. Antique Periodic Table
  11. The Titanic's propellers in the Thompson Graving Dock of Harland
  12. Sage Agate A
  13. 1940's Trading In Progress On Floor Of New York Stock Exchange NYC USA
  14. The Temple Scroll, From The Dead Sea Scrolls
  15. Sitting Bull, a Hunkpapa Lakota tribal chief
  16. Timeline of Dinosaurs
  17. Portrait of Abraham Lincoln
  18. The Entrance of Joan of Arc into Orleans on 8th May 1429
  19. Altering Current
  20. Civil War painting of Union and Confederate troops fighting at The Battle of Antietam
  21. Map, WWII Battles, c1945
  22. Strings
  23. George Washington, by Rembrandt Peale, c. 1850
  24. Composite of 110 different species of ducks and geese
  25. The Milky Way and the other members of our Local Group of galaxies
  26. Fibonacci spiral, artwork
  27. Grain
  28. United States Constitution - Vertical
  29. Sage Agate B
  30. Albert Einstein
  31. Viking longboats
  32. Apache Men, c1903
  33. Civil War painting of Union and Confederate troops at The Battle of Shiloh
  34. Prohibition Headline, 1919
  35. The Capitol -East Front
  36. Davy Crockett: Hero of the Alamo
  37. Hudson Bay Trading Post On Flathead Indian Reservation, Montana Territory, c1860
  38. Four kinds of lamp: Edison, Maxim, Swan, and Werdermann
  39. Anterior view of human skeletal system, with labels
  40. Development of the English alphabet
  41. Interior of the Library, Trinity College, Dublin, Eire (Republic of Ireland)
  42. Apache On Horseback, c1903
  43. Oilfield At Spindletop
  44. Signature of George Washington
  45. The Hare Afraid by His Ears, La Fontaine's Fables
  46. Grey Agate E
  47. Abraham Lincoln, by George Peter Alexander Healy, 1860
  48. Underground Railroad Map