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  1. Vintage Parchment Windmill 1906 Patent Poster
  2. The Summit Of Little Round Top During the Battle Of Gettysburg, 1863
  3. Carl Sagan
  4. Wheat Mower with Hat, Seen from Behind, by Vincent van Gogh, c. 1870-90
  5. Surveyors Wanted to Explore Mars and its Moons
  6. Alexander Hamilton, by John Trumbull, 1792
  7. American Frohse Anatomical Wallcharts, Plate II
  8. Unfinished Portrait of Napoleon I formerly attributed to Jacques Louis David 1808
  9. Highlights from History: Ireland's 'Great Rebellion'
  10. Jacob's Pharmacy
  11. John Brown on 30 August 1856 intercepting a body of pro-slavery men
  12. Portrait Of Rosa Parks, Civil Rights Leader
  13. Poe
  14. The Fir-Tree and the Bramble, illustration from Aesop's Fables
  15. Hello Calculator
  16. The Lion, Jupiter and the Elephant, illustration from Aesop's Fables
  17. Cherry Tree - Botanical Illustration
  18. Superior view of human brain with colored lobes and labels
  19. Vintage Civil War print of a Union Drummer Boy holding a rifle on battlefield
  20. Stacked Agate I
  21. Pi to 2198 decimal place
  22. Earth
  23. Solar System (Colored)
  24. Illustrated USA
  25. Study of the Human Figure, Lateral View
  26. Space Suit
  27. Malcolm X
  28. Pythagoras Maths Equation
  29. The Planet Saturn
  30. Molecule Vanilin
  31. Florence Nightingale (1820-1910) illustration from World Noted Women
  32. For Your Country's Sake Today - Women in the Armed Forces
  33. Washington Crossing The Delaware On The Evening Previous To The Battle Of Trenton
  34. Gem Stones I
  35. Knights charging into battle
  36. Desk Tools III
  37. Vintage World War II poster featuring a fighter plane and a ship patrolling the sea
  38. The Planet Earth
  39. Human brain anatomy, lateral view
  40. John Bunyan. Author Of the Pilgrim's Progress. From The Portrait By Sadler
  41. Desk Tools I
  42. Gem Stones III
  43. Mathematical Elements II
  44. Teach on Mars and its Moons
  45. The Planet Jupiter
  46. Frank Whittle's early development of the jet engine
  47. Fascimile of a letter from Vincent Van Gogh to Emile Bernard on the 18th March 1888
  48. Marley's Ghost. Illustration for the novella A Christmas Carol