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  1. Venus
  2. To Polish The Sun
  3. The human body with superimposed colored plates by Julien Bougle
  4. California, Palm Springs. Windmill Farm along North Indian Canyon Drive
  5. Pile of paperback books on desk in school library.
  6. Get Ahead! Adult Education Classes: For Adults at No Charge - WPA Poster
  7. Be Creative
  8. The Los Angeles Times announcing the end of World War I, 1918
  9. The cervical vertebrae
  10. Volcanoes - USGS Earth as Art
  11. As Pandora Raised The Lid The Cottage Grew Very Dark. Illustration
  12. Lion and Gladiator
  13. Anti Child Labor Poster, 1913
  14. Rugged Terrain - USGS Earth as Art
  15. Fun Facts about the U.S. Presidents
  16. The Transfiguration
  17. Robinson Crusoe and his pets. From Adventures of Robinson Crusoe, published 1908
  18. The building of the Union Pacific Railroad
  19. Cardiovascular system, artwork
  20. Miss Nightingale in the Hospital at Scutari
  21. Military camp with soldiers in street during the American Civil War
  22. Che Guevara
  23. Golden Pharoah
  24. Beer, the Hop Plant, 1836
  25. Dragon Lake - USGS Earth as Art
  26. Silversmith at work, c.1914
  27. Vintage Civil War print of General William Tecumseh Sherman
  28. Archaeopteryx
  29. The Pirates of Penzance
  30. Vertebrates
  31. General Robert E. Lee at the Battle of Fredericksburg, 13th December 1862
  32. Invertebrates
  33. Vintage World War II poster featuring a fedora and an Army helmet
  34. Annunciation to the Shepherds. Book of Hours of Leonor de la Vega. 1465-70
  35. Lady Bell Plant Pollen
  36. President John F. Kennedy visits with reporters
  37. Christian's Conflict With Apollyon. From The Book The Pilgrim's Progress
  38. Mae Jemison (1956- )
  39. The nerve supply of the upper body
  40. Okavango Delta - USGS Earth as Art
  41. Mineralogie III
  42. Alice And The Caterpillar
  43. Conceptual image of platelets with red blood cells
  44. Virginia - USGS State Mosaic
  45. Civil War, Bull Run, 1861
  46. Geometry set
  47. Ganges River Delta - USGS Earth as Art
  48. Yutyrannus huali is a feathered tyrannosauroid from the Early Cretacous of China