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  1. Sohrab Facing the Tent of the Persian Army Leaders. Shahnameh. The Book of Kings. 16th c
  2. The bones of the jaw
  3. Pi to 2198 decimal place
  4. Molecule THC
  5. Portrait of Andrew Jackson
  6. Molecule Vanilin
  7. Vintage Civil War print of President Abraham Lincoln and his cabinet
  8. Bullfrog
  9. Carburetor
  10. Desk Tools III
  11. Nikola Tesla With Machine
  12. Molecule Chili
  13. Surveyors Wanted to Explore Mars and its Moons
  14. Desert to Forest - USGS Earth as Art
  15. Digestive system, artwork
  16. Edwin Hubble's Galaxy Classification System
  17. Book
  18. Modern Comanche, 1891
  19. Unfinished Portrait of Napoleon I formerly attributed to Jacques Louis David 1808
  20. Women's Rights Parade, 1913
  21. The Heavens II
  22. RMS Titanic departing from Southanpton on her maiden voyage, April 5, 1912
  23. Relaxing feet.
  24. Tesla
  25. The Spider and the Fly, illustration from Aesop's Fables
  26. Civil War print depicting the Union Army's capture of Fort Fisher
  27. Molecule Water
  28. The Two Rats, Fox, and Egg, La Fontaine's Fables
  29. Young boy in school writing on chalkboard
  30. Highlights from History: Ireland's 'Great Rebellion'
  31. John Adams, by Gilbert Stuart, c. 1800-15
  32. Muhammad Ali on the shore of the Congo River, Kinshasa, Zaire
  33. Human anatomy showing deep muscles in the neck and upper back
  34. Conceptual image of DNA
  35. Christian Loses His Burden At The Cross. From The Book The Pilgrim's Progress
  36. States of the German Confederation
  37. Sunflower - Botanical Illustration
  38. Chinese acupuncture model
  39. Proud to be an American I
  40. College Graduation Ceremony
  41. No Man's Land - USGS Earth as Art
  42. Listen to your Teacher
  43. Vintage Civil War print of the Battle of Fredericksburg
  44. Blood clot, SEM
  45. The bones of the head, neck and face
  46. Muir Woods National Monument, California - John Muir Portrait: Retro Poster
  47. Ocean Jasper
  48. Distance of Sun, Moon and Planets