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  1. The human skeleton and muscular system, front view
  2. Animal Life Spans
  3. Early map of the Moon, 1772
  4. Artwork of cervical vertebra from human spine
  5. Guitar string vibrating
  6. Microscopic view of human B-cells
  7. Total solar eclipse, 1878
  8. Human skull
  9. Pastel Periodic Table - Classic Text
  10. 2p electron orbitals
  11. Normal knee, X-ray
  12. Artwork of the pterosaur, Pteranodon sp
  13. Cell
  14. Mars topographical map, satellite image
  15. Soap bubbles on a dodecahedral frame
  16. Practical Mechanics, November 1955
  17. Iron pyrites
  18. Refraction
  19. Gold nugget held in tweezers
  20. The Optimist - USGS Earth as Art
  21. Ernst Haeckel Map Lemuria Human Origins
  22. 'Rheumatoid arthritis of the hands, X-ray
  23. Newspapr Rock Petroglyphs, Utah
  24. Brain anatomy, artwork
  25. DNA assembly, artwork
  26. Newton's Cradle in Motion
  27. Stamp out Syphilis and Gonorrhea - WPA Poster
  28. Bees
  29. Marie Curie
  30. Canada, Manitoba, Churchill Northern lights
  31. DEC PDP-1 computer
  32. Colon blood vessels, light micrograph
  33. Moon Chart I
  34. X-ray view of human foot
  35. Colorized image of HIV-infected H9 T-cell
  36. Conceptual image of DNA
  37. Marie Curie, Polish-French physicist
  38. Molecule Water
  39. Muscles of the side and back
  40. Patent--Light Bulb
  41. Three stages of periodontal disease
  42. Heart and lungs, historical illustration
  43. Blood clot, SEM
  44. Purple Watercolor Agate I
  45. Sound byte, artwork
  46. Venus
  47. Cell
  48. Human teeth structure with labels