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  1. Sioux Dance, 1890
  2. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  3. Mushroom Chart I light
  4. Teachers III Blue
  5. Official White House Portrait Of George H. W. Bush By Herbert Abrams
  6. The Planet Neptune
  7. Civil War print depicting the Union Army's capture of Fort Fisher
  8. Vintage Parchment Hydraulic Drilling Rig Patent Poster
  9. Dental X-ray
  10. Graduated Cylinders And Flasks
  11. The nerve supply of the upper body
  12. Pneumonia Strikes like a Man Eating Shark - WPA Poster
  13. Venus
  14. Assembly Required to Build Our Future on Mars and its Moons
  15. Paris at Thermopylae
  16. Vintage Parchment Otoscope Patent Print
  17. Sigmund Freud
  18. Colorado - USGS State Mosaic
  19. The Battle of Bosworth - Into Battle
  20. Battle Of Gettysburg, 1863
  21. Balance
  22. Sohrab Facing the Tent of the Persian Army Leaders. Shahnameh. The Book of Kings. 16th c
  23. Civil War Fort I
  24. How Seeds Travel
  25. Detail of hieroglyphic writing. Museum of Fine Arts. Budapest. Hungary
  26. Paul Charles Morphy (1837-84) engraved by D.J. Pound from a photograph
  27. Study of the Human Figure, Anterior View
  28. David Copperfield. Illustration for the Charles Dickens novel David Copperfield
  29. San Luis, Argentina - USGS Earth as Art
  30. Venus I
  31. Tribute To Vikings
  32. Portrait of Ulysses S. Grant (1822-85)
  33. Good Grades and Good Health Go Together - WPA Poster
  34. The Planet Venus
  35. Abraham Lincoln (1809-65) plans his campaign during the American Civil War (1861-65)
  36. Sierra de Velasco - USGS Earth as Art
  37. Utah - USGS State Mosaic
  38. Mexican Revolution (1910-19). Train with wounded revolutionary fighters
  39. Miss Havisham. Illustration for the Charles Dickens novel Great Expectations 1910
  40. Living Relatives of Dinoaurs
  41. Titanic
  42. Electric Tattooing Device, Charles Wagner, 1904
  43. Photomicroscopic close up of a snowflake crystal
  44. World War I, Map, c1919
  45. Anterior view of human pelvis, with labels
  46. The First Public Reading of the Declaration of Independence
  47. Development of Arabic numerals
  48. California, Summit City, Shasta Dam, Shasta Lake, with view of Mt. Shasta