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  1. Molecule Ethanol
  2. Arthritis of the neck, X-ray
  3. John Brown on 30 August 1856 intercepting a body of pro-slavery men
  4. Microphone
  5. The Fir-Tree and the Bramble, illustration from Aesop's Fables
  6. Hey Diddle, Diddle, from Old Mother Goose's Rhymes and Tales
  7. Earth
  8. The Fox and the Rooster
  9. The Fox and the Grapes, Selected Fontaine's Fables
  10. George Washington, by Gilbert Stuart (Vaughan-Sinclair portrait), 1795
  11. Microscope
  12. How the Titanic Survivors Were Picked Up by the Carpathia
  13. Portrait Of Harriet Tubman, 1868-69
  14. Petrarch. Italian poet. The in Triumph of Love (15th c.) National Library, Madrid
  15. William Shakespeare at the Age 34, By Louis Coblitz, c.1830-60, German, oil on canvas
  16. Hudson River, Military Map
  17. The Lion, Jupiter and the Elephant, illustration from Aesop's Fables
  18. Alice in the Looking Glass House, from 'Through the Looking Glass' by Lewis Carroll
  19. World War II painting of Winston Churchill wearing his RAF uniform
  20. Flying Machine, drawing by Leonardo da Vinci. Ca. 1488
  21. Stethoscope
  22. Hebrew Bible, 1299. Ark of the Covenant open showing Tablets of the Law
  23. Arthritis of the knee, X-ray
  24. South American Independence
  25. Space Suit
  26. Austenaco, Great Warrior, Commander in Chief of the Cherokee Nation
  27. The Quack Frog, illustration from Aesop's Fables
  28. Watercolor Agate I
  29. Study of the Human Figure, Lateral View
  30. Agate Geode I
  31. Famous prehistoric rock paintings of Tassili N'Ajjer, Algeria
  32. Solar System (Colored)
  33. The Planets, excluding Pluto
  34. The Rainforest
  35. A Mad Teaparty By Charles Folkard
  36. Houdini Diver Suit
  37. Mars
  38. Superior view of human brain with colored lobes and labels
  39. Moss Agate
  40. Book
  41. Sohrab Facing the Tent of the Persian Army Leaders. Shahnameh. The Book of Kings. 16th c
  42. Molecule Vanilin
  43. Molecule Chili
  44. Carburetor
  45. RMS Titanic departing from Southanpton on her maiden voyage, April 5, 1912
  46. Portrait of Andrew Jackson
  47. Nikola Tesla With Machine
  48. Digestive system, artwork