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  1. Distance of Sun, Moon and Planets
  2. Civil War, Texas Rangers, 1861
  3. Bouncing ball
  4. Normal shoulder, X-ray
  5. Martin Luther King, Jr. (1929-1968)
  6. Photomicroscopic close up of a snowflake crystal
  7. Artist's Rendering Of A Solar System
  8. Abraham Lincoln, 1809
  9. The bones of the pelvis
  10. Alberta, Reserve, c1890
  11. Meandering Mississippi - USGS Earth as Art
  12. Microscopic view of bacteria
  13. 'Rheumatoid arthritis of the hands, X-ray
  14. Molecule Cinnamon
  15. Capitol From the Botanical Gardens
  16. Base of human skull, inferior view, with labels
  17. Signature of John Hancock
  18. Scrooge Objects to Christmas. Illustration for the novella A Christmas Carol
  19. Florence Nightingale (1820-1910) illustration from World Noted Women
  20. Normal hip, X-ray
  21. Bears
  22. Illustration By Arthur Rackham From Grimm's Fairy Tale, The Cunning Little Tailor
  23. Spilled Paint - USGS Earth as Art
  24. The sun sets behind a row of spinning windmills or wind turbines
  25. Good Grades and Good Health Go Together - WPA Poster
  26. Portrait of Patrick Henry (1736-99)
  27. Denver, Colorado, 1859
  28. Solar System II
  29. Faridun's Sons Marry the Three Daughters of Sero. Shahnameh. The Book of Kings
  30. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings
  31. Pennsylvania, Gettysburg, Battle of Gettysburg, tree and battlefield monument, dawn
  32. Shame may be Fatal - WPA Poster
  33. Winston Churchill (1874-1965) in Naval Scene
  34. The Teacher
  35. A Pawnee Brave
  36. School supplies
  37. Mistletoe - Botanical Illustration
  38. Arteries of the brain, 3D CT scan
  39. Lena Delta - USGS Earth as Art
  40. Molecule Licorice
  41. Mexican Revolution (1910-19). Train with wounded revolutionary fighters
  42. Vintage American History painting of Alexander Hamilton
  43. Poe
  44. Pair of human hands on black background.
  45. Wilson Dam, Flood Gates
  46. Gem Stones III
  47. Bees - Vintage Educational Poster
  48. Mathematical Elements IV