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