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  1. Standard electrical circuit symbols
  2. Rorschach Inkblot Test
  3. Sherlock Holmes and Dr. Watson
  4. Development of the English alphabet
  5. Foot anatomy by Leonardo da Vinci
  6. Spine anatomy
  7. Spine anatomy
  8. Hummingbirds, historical artwork
  9. Rhazes, Islamic scholar
  10. Durer's Rhinoceros, 1515
  11. Table comparing ancient scripts
  12. 19th century chart of ocean currents
  13. Newton's optics
  14. Butterflies, artwork
  15. Muscles of the side and back
  16. Young hare, by Durer
  17. Francesco Sforza, military leader
  18. Flame emission spectra of alkali metals
  19. Redshank, historical artwork
  20. Nicolaus Copernicus, Polish astronomer
  21. Bees
  22. Newspaper printing press
  23. Egyptian and Assyrian counting systems
  24. Torso bones
  25. Sandpiper, historical artwork
  26. Early electrical equipment
  27. Early petrol locomotives
  28. 16th century map of Venice
  29. Shelduck, historical artwork
  30. Table from Becher's 'Opuscula chymica'
  31. Native American census roll, artwork
  32. Little stint, historical artwork
  33. Four Horsemen of the Apocalypse
  34. Olive trees, Puglia, Italy, Europe
  35. Body musculature
  36. Brain anatomy, 16th century diagram
  37. Computer hard disk assembly
  38. Anglo-Saxon 10th century world map
  39. Body musculature
  40. Foot bones
  41. Carboniferous landscape
  42. Apollonius of Perga, Greek mathematician
  43. Egyptian creation myth
  44. High-pressure steam engine, 19th century
  45. Standard electrical circuit symbols
  46. Development of Arabic numerals
  47. Durer's world map, 1515
  48. Tawny owl, historical artwork