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  1. Arthritis of the neck, X-ray
  2. Sioux Grass Dance, c1913
  3. The Historic Meeting Of The Union High Command During The American Civil War
  4. Chrysocolla
  5. Molecule Ethanol
  6. External auditory canal of human ear (with labels)
  7. Pythagoras Maths Equation
  8. John Brown on 30 August 1856 intercepting a body of pro-slavery men
  9. Navajo weavers, c.1914
  10. Bright Periodic Table - White, Modern Text
  11. Soap bubbles on a dodecahedral frame
  12. Egyptian and Assyrian counting systems
  13. Microphone
  14. Malachite
  15. Oil Pump Jacks On Canadian Prairie At Dusk, Carlyle, Saskatchewan, Canada
  16. The Fir-Tree and the Bramble, illustration from Aesop's Fables
  17. Van Gogh from Space - USGS Earth as Art
  18. Hey Diddle, Diddle, from Old Mother Goose's Rhymes and Tales
  19. Close Ups Of Fortification On Crazy Lace Agate
  20. Earth
  21. Inquiry in the Loss of the Titanic: Cross sections of the ship
  22. The Fox and the Rooster
  23. Fascimile of a letter from Vincent Van Gogh to Emile Bernard on the 18th March 1888
  24. The Fox and the Grapes, Selected Fontaine's Fables
  25. Mohawk Village, 1780
  26. Signal Hill Oil Derricks
  27. Microscope
  28. George Washington, by Gilbert Stuart (Vaughan-Sinclair portrait), 1795
  29. Armillary sphere
  30. The Nina, Pinta, And Santa Maria
  31. Hand doing math homework
  32. How the Titanic Survivors Were Picked Up by the Carpathia
  33. Bogda Mountains - USGS Earth as Art
  34. Portrait Of Harriet Tubman, 1868-69
  35. William Shakespeare at the Age 34, By Louis Coblitz, c.1830-60, German, oil on canvas
  36. Conceptual image of neuron
  37. Vintage Civil War print of Abraham Lincoln riding on horseback as a crowd cheers
  38. Flying Machine, drawing by Leonardo da Vinci. Ca. 1488
  39. Earth Agate A
  40. World War II painting of Winston Churchill wearing his RAF uniform
  41. Hudson River, Military Map
  42. The Lion, Jupiter and the Elephant, illustration from Aesop's Fables
  43. Alice in the Looking Glass House, from 'Through the Looking Glass' by Lewis Carroll
  44. Space Suit
  45. The Underground Railroad Aids With A Runaway Slave
  46. Illustrated USA
  47. Stethoscope
  48. Famous prehistoric rock paintings of Tassili N'Ajjer, Algeria