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