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