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  1. Rorschach Inkblot Test
  2. Standard electrical circuit symbols
  3. Sherlock Holmes and Dr. Watson
  4. Spine anatomy
  5. Spine anatomy
  6. Development of the English alphabet
  7. Durer's Rhinoceros, 1515
  8. Butterflies, artwork
  9. Rhazes, Islamic scholar
  10. Flame emission spectra of alkali metals
  11. Foot anatomy by Leonardo da Vinci
  12. Muscles of the side and back
  13. Hummingbirds, historical artwork
  14. Newton's optics
  15. Table comparing ancient scripts
  16. Nicolaus Copernicus, Polish astronomer
  17. Newspaper printing press
  18. Olive trees, Puglia, Italy, Europe
  19. Early electrical equipment
  20. Bees
  21. Egyptian and Assyrian counting systems
  22. 16th century map of Venice
  23. 19th century chart of ocean currents
  24. Body musculature
  25. Shelduck, historical artwork
  26. 19th Century electrical equipment
  27. Native American census roll, artwork
  28. Body musculature
  29. Foot bones
  30. Facial nerves
  31. Francesco Sforza, military leader
  32. Egyptian creation myth
  33. Young hare, by Durer
  34. Durer's Celestial Globe, 1515
  35. Sandpiper, historical artwork
  36. Redshank, historical artwork
  37. Computer hard disk assembly
  38. Table from Becher's 'Opuscula chymica'
  39. Anglo-Saxon 10th century world map
  40. Torso bones
  41. Phrenology chart
  42. Johannes Kepler and Tycho Brahe
  43. 1920s television system, diagram
  44. Tawny owl, historical artwork
  45. Homeric cosmogony
  46. Acoustic echo
  47. Features of fingerprints
  48. Medieval urine wheel