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  1. Pipestone Quarry On the Coteau Des Prairies, 1836
  2. United States Fun Facts
  3. Cartilage cells, TEM
  4. The Making of America
  5. The sun sets behind a row of spinning windmills or wind turbines
  6. Portrait of Booker T. Washington sitting in a chair
  7. A Garland For May Day 1895 Dedicated To The Workers By Walter Crane
  8. Battle Of Gettysburg, 1863
  9. Behemoth and Leviathan
  10. Vintage Civil War print of a Union Drummer Boy holding a rifle on battlefield
  11. European Travel
  12. Cross section image of human head
  13. Front page of The New York Times, 13 February 1945, reporting on the Yalta Conference
  14. The four terrestrial planets compared in scale
  15. An Ioway Chief
  16. Development of Arabic numerals
  17. Montana - USGS State Mosaic
  18. Elastic artery cross-section, SEM
  19. The First Public Reading of the Declaration of Independence
  20. Wine Grapevine - Botanical Illustration
  21. Official White House Portrait Of George H. W. Bush By Herbert Abrams
  22. A Pawnee Brave
  23. Battle of Eylau, Napoleon orders Murat to Charge Russian Army
  24. Abraham Lincoln (1809-65) plans his campaign during the American Civil War (1861-65)
  25. Spilled Paint - USGS Earth as Art
  26. Manuscript Of Fifteenth Amendment To The Constitution
  27. Revolutionary War Plan
  28. Scanning electron micrograph of Staphylococcus and a dead human neutrophil
  29. Death's Door, illustration from 'The Grave, A Poem'
  30. The Nine Year Siege of Troy
  31. Outback Abstract
  32. Oscar Wilde
  33. Geometry tools
  34. Portrait of naturalist and geologist Charles Darwin
  35. Black Hole Singularity Diagram
  36. Teach on Mars and its Moons
  37. Laboratory Equipments
  38. Technicians Wanted to Engineer our Future on Mars
  39. Long Island Railroad Communication Lines
  40. Conceptual image of DNA
  41. Meandering Mississippi - USGS Earth as Art
  42. Tennessee - USGS State Mosaic
  43. The Flying Dutchman And Voltigeur Running The Great Match At York Racecourse
  44. P-38 Lightning Technical: Retro Travel Poster
  45. Comparing Saurischian and Ornithischian Pelvises
  46. Keyboard Keys
  47. Moses and the Burning Bush
  48. Florida - USGS State Mosaic