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  1. Paul Charles Morphy (1837-84) engraved by D.J. Pound from a photograph
  2. Moses and the Burning Bush
  3. Zora Hurston Beating The Hountar (Mama Drum), 1937
  4. Scottish regiment fighting German troops at Battle of Loos
  5. Bright Periodic Table - Black, Modern Text
  6. The Shipwrecked Man and the Sea, illustration from Aesop's Fables
  7. Florida - USGS State Mosaic
  8. Arthritis of the hip, X-ray
  9. Sailors on deck of USS Mendota gun boat during American Civil War
  10. Normal knee, X-ray
  11. Sense of Wonder
  12. John Bunyan. Author Of the Pilgrim's Progress. From The Portrait By Sadler
  13. Malachite
  14. Distillation, 16th century woodcut
  15. The musculoskeleton of the jaw
  16. Chain Of Molecules
  17. Normal hip, X-ray
  18. Brooklyn Window #25
  19. Human brain anatomy, lateral view
  20. The bones of the neck
  21. Montana - USGS State Mosaic
  22. Work the Night Shift on Martian Moon Phobos
  23. Scanning electron micrograph of HIV particles infecting a human T cell
  24. Assembly Required to Build Our Future on Mars and its Moons
  25. Wilson Dam, Alabama, forms portion of the Tennessee River barge route
  26. Graduated Cylinders And Flasks
  27. Mineralogie I
  28. Relief depicting a pharaoh making an offering, Temple of Luxor, Egypt
  29. First Letter Carried By Pony Express
  30. Abraham Lincoln (1809-65) plans his campaign during the American Civil War (1861-65)
  31. World War I, Geography
  32. Battle of Eylau, Napoleon orders Murat to Charge Russian Army
  33. Study of the Human Figure, Anterior View
  34. Knocking-off time at the Harland
  35. Tennessee - USGS State Mosaic
  36. old-fashioned drawing compass
  37. Anterior view and sagittal view of female urinary bladder
  38. 'Ar never gets off'
  39. Title Page From The Luther Bible, C.1530
  40. Conceptual image of DNA
  41. Puerto Rico - USGS State Mosaic
  42. William II, Prince of Orange, and his Bride, Mary Stuart, 1641
  43. Signature Of Charles Dickens, 1812-1870. From The Book Bleak House
  44. One, Two, Buckle my Shoe, from Old Mother Goose's Rhymes and Tales
  45. Solar System - Blue I
  46. Apollo 13
  47. Grey School Chalkboard With Many Different Formulas And Signs
  48. Venus