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  1. Martin Luther King, Jr. (1929-1968)
  2. 'Rheumatoid arthritis of the hands, X-ray
  3. Molecule Cinnamon
  4. Base of human skull, inferior view, with labels
  5. Capitol From the Botanical Gardens
  6. Signature of John Hancock
  7. Bears
  8. Spilled Paint - USGS Earth as Art
  9. Normal hip, X-ray
  10. Denver, Colorado, 1859
  11. Portrait of Patrick Henry (1736-99)
  12. Solar System II
  13. Australia, Northern Territory, Arnhem Land, Mt Borradaile, rock paintings
  14. A Pawnee Brave
  15. The Teacher
  16. School supplies
  17. Pair of human hands on black background.
  18. Molecule Licorice
  19. Mathematical Elements IV
  20. Gem Stones III
  21. Indigo Agate D
  22. Roman Roads
  23. Normal shoulder, X-ray
  24. Portrait Of Rosa Parks, Civil Rights Leader
  25. RMS Titanic being moved out of drydock, March 6, 1912
  26. Neptune
  27. William Edward Burghardt Du Bois, African-American Scholar And Civil Rights Activist
  28. Replica Of Eli Whitney's Cotton Gin
  29. The vertebral column
  30. Desk Tools IV
  31. Joan of Arc Re-Captures City of Beaugency From the British
  32. A diagram of the Milky Way, depicting its various named parts
  33. Molecule Honey
  34. The Hare and the Frogs, La Fontaine's Fables, 1900
  35. Rib cage and heart, 3D CT scan
  36. Early Stone Implements
  37. The Last of the Spirits. Illustration for the novella A Christmas Carol
  38. Sioux Dance, 1890
  39. Vintage Civil War print of President Abraham Lincoln and his cabinet
  40. Conversion
  41. Pathways Educational Poster
  42. Gem Stones I
  43. Arkansas - USGS State Mosaic
  44. Columbus, Map, 15th Century
  45. Plan Of the Campaign In New York And New Jersey, 1776
  46. Marley's Ghost. Illustration for the novella A Christmas Carol
  47. Prohibition Cartoon, 1920s
  48. Grammar Lesson