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