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