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  1. Molecule Ethanol
  2. The Historic Meeting Of The Union High Command During The American Civil War
  3. Tlazolteotl and Chalchiuhtlicue, Aztec Goddesses of Love and Water. 15th c. Codex Cospi
  4. Arthritis of the neck, X-ray
  5. External auditory canal of human ear (with labels)
  6. Chrysocolla
  7. John Brown on 30 August 1856 intercepting a body of pro-slavery men
  8. Soap bubbles on a dodecahedral frame
  9. Bright Periodic Table - White, Modern Text
  10. Egyptian and Assyrian counting systems
  11. Blackfoot Native American
  12. The Nina, Pinta, And Santa Maria
  13. Hey Diddle, Diddle, from Old Mother Goose's Rhymes and Tales
  14. Malachite
  15. Microphone
  16. Van Gogh from Space - USGS Earth as Art
  17. The Fir-Tree and the Bramble, illustration from Aesop's Fables
  18. Earth
  19. Close Ups Of Fortification On Crazy Lace Agate
  20. Oil Pump Jacks On Canadian Prairie At Dusk, Carlyle, Saskatchewan, Canada
  21. The Fox and the Grapes, Selected Fontaine's Fables
  22. Fascimile of a letter from Vincent Van Gogh to Emile Bernard on the 18th March 1888
  23. The Fox and the Rooster
  24. Signal Hill Oil Derricks
  25. Mohawk Village, 1780
  26. George Washington, by Gilbert Stuart (Vaughan-Sinclair portrait), 1795
  27. Microscope
  28. Inquiry in the Loss of the Titanic: Cross sections of the ship
  29. How the Titanic Survivors Were Picked Up by the Carpathia
  30. Hand doing math homework
  31. Bogda Mountains - USGS Earth as Art
  32. Armillary sphere
  33. Petrarch. Italian poet. The in Triumph of Love (15th c.) National Library, Madrid
  34. Conceptual image of neuron
  35. William Shakespeare at the Age 34, By Louis Coblitz, c.1830-60, German, oil on canvas
  36. Vintage Civil War print of Abraham Lincoln riding on horseback as a crowd cheers
  37. Hudson River, Military Map
  38. Alice in the Looking Glass House, from 'Through the Looking Glass' by Lewis Carroll
  39. The Underground Railroad Aids With A Runaway Slave
  40. World War II painting of Winston Churchill wearing his RAF uniform
  41. Earth Agate A
  42. Flying Machine, drawing by Leonardo da Vinci. Ca. 1488
  43. Hebrew Bible, 1299. Ark of the Covenant open showing Tablets of the Law
  44. Mushroom Chart I light
  45. The Lion, Jupiter and the Elephant, illustration from Aesop's Fables
  46. War of 1812 print at the Battle of New Orleans
  47. American War of Independence
  48. Pietersite