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  1. Sioux Grass Dance, c1913
  2. William II, Prince of Orange, and his Bride, Mary Stuart, 1641
  3. Bright Periodic Table - Black, Modern Text
  4. Prohibition Cartoon, 1920s
  5. Blood clot, SEM
  6. Vintage Parchment Pencil Sharpener Patent Poster
  7. Black Hole Singularity Diagram
  8. Florida - USGS State Mosaic
  9. A pair of Allosaurus dinosaurs explore the remains of a Diplodocus carcass
  10. Elastic artery cross-section, SEM
  11. Vintage Civil War print of Abraham Lincoln riding on horseback as a crowd cheers
  12. Military camp with soldiers in street during the American Civil War
  13. Moses and the Burning Bush
  14. Solar System - Blue I
  15. Vintage Civil War print featuring the Battle of Gettysburg
  16. Algerian Sahara - USGS Earth as Art
  17. Yankee Doodle 1776
  18. The cervical vertebrae
  19. Interiors of a library, Peabody Institute, Johns Hopkins University, Baltimore, Maryland
  20. The vertebral column
  21. USA Typography map
  22. George Washington taking command of the Army, 1775
  23. Desk Tools IV
  24. Grey School Chalkboard With Many Different Formulas And Signs
  25. Portrait of Andrew Jackson
  26. Cyclopes
  27. British Invasion
  28. Vintage Parchment Ophthalmoscope Patent
  29. Moss Agate
  30. Portrait Of Harriet Tubman, 1868-69
  31. Faded Blueprint Stethoscope Patent Poster
  32. Vintage Civil War print of President Abraham Lincoln and his cabinet
  33. California, Palm Springs. Windmill Farm along North Indian Canyon Drive
  34. Newsboy Ned Parfett announcing the sinking of the 'Titanic' on April 16, 1912
  35. Map Of the Battle Of Gettysburg, 1863
  36. Vitruvian Skeleton
  37. Illustration By Arthur Rackham From Grimm's Fairy Tale, The Cunning Little Tailor
  38. If I Were A Cloud
  39. General Ulysses S. Grant leading Union troops into battle
  40. Wingate Pass Agate, Ca
  41. Miss Nightingale in the Hospital at Scutari
  42. Karman Vortices - USGS Earth as Art
  43. A composite showing different stages of the 2010 solstice total moon eclipse
  44. Lena Delta - USGS Earth as Art
  45. Kentucky - USGS State Mosaic
  46. Teaching is My Super Power
  47. Sailors on deck of USS Mendota gun boat during American Civil War
  48. Andes - USGS Earth as Art