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  1. Volcanoes - USGS Earth as Art
  2. Be Creative
  3. Venus
  4. Dragon Lake - USGS Earth as Art
  5. The Los Angeles Times announcing the end of World War I, 1918
  6. California, Palm Springs. Windmill Farm along North Indian Canyon Drive
  7. The cervical vertebrae
  8. Desert Patterns - USGS Earth as Art
  9. Assembly Required to Build Our Future on Mars and its Moons
  10. Scottish regiment fighting German troops at Battle of Loos
  11. Anti Child Labor Poster, 1913
  12. Lion and Gladiator
  13. Che Guevara
  14. Fun Facts about the U.S. Presidents
  15. Military camp with soldiers in street during the American Civil War
  16. Miss Nightingale in the Hospital at Scutari
  17. Silversmith at work, c.1914
  18. The building of the Union Pacific Railroad
  19. Cardiovascular system, artwork
  20. Beer, the Hop Plant, 1836
  21. The Pirates of Penzance
  22. The musculoskeleton of the jaw
  23. Geometry set
  24. Archaeopteryx
  25. Mae Jemison (1956- )
  26. Golden Pharoah
  27. Annunciation to the Shepherds. Book of Hours of Leonor de la Vega. 1465-70
  28. Lady Bell Plant Pollen
  29. Vertebrates
  30. General Robert E. Lee at the Battle of Fredericksburg, 13th December 1862
  31. Invertebrates
  32. Conceptual image of platelets with red blood cells
  33. The Fox and the Crow, Selected Fontaine's Fables
  34. Okavango Delta - USGS Earth as Art
  35. The nerve supply of the upper body
  36. Christian's Conflict With Apollyon. From The Book The Pilgrim's Progress
  37. Civil War, Bull Run, 1861
  38. Dandy Bones
  39. World War I, Geography
  40. Ganges River Delta - USGS Earth as Art
  41. Alice And The Caterpillar
  42. Vintage print of Presidents James Garfield, Abraham Lincoln, and William McKinley
  43. Vintage American History print of Colonel Theodore Roosevelt
  44. Vintage Civil War print of General William Tecumseh Sherman
  45. Colours That Reflect Joy
  46. American History print of Benjamin Franklin's reception by the French court
  47. Yutyrannus huali is a feathered tyrannosauroid from the Early Cretacous of China
  48. Pipes at Nesjavellir Geothermal Power Plant, Iceland