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  1. Yutyrannus huali is a feathered tyrannosauroid from the Early Cretacous of China
  2. Virginia - USGS State Mosaic
  3. Pipes at Nesjavellir Geothermal Power Plant, Iceland
  4. Teacher Truths VII-Rewarding
  5. Vintage World War I poster of an ambulance being pulled by Pegasus
  6. Puerto Rico - USGS State Mosaic
  7. Vintage Civil War poster of the Battle of Missionary Ridge
  8. Back to School
  9. The Dancing Academy. Illustration for Sketches by Boz by Charles Dickens
  10. The human body with superimposed colored plates by Julien Bougle
  11. Vintage World War II poster featuring a fedora and an Army helmet
  12. Mineralogie I
  13. Arthritis of the neck, X-ray
  14. First Moon Men, Conceptual Art
  15. Timberman
  16. Nebraska - USGS State Mosaic
  17. Cross section biomedical illustration of pulp and root abscess in molar
  18. Manners and Lessons, from 'Through the Looking Glass' by Lewis Carroll
  19. The Town Mouse and the Country Mouse, La Fontaine's Fables
  20. A herd of Brachiosaurus travel near a canyon mountain
  21. Girl looking over stack of books
  22. Abacus.
  23. The Discovery Of Nat Turner
  24. Smilodon sabertooth mother and her cubs
  25. Nikola Tesla
  26. Lake Disappointment - USGS Earth as Art
  27. Fountain Pen
  28. The Dardzha Monster - USGS Earth as Art
  29. Molecule Testosterone
  30. Dinosaur Skeleton, 1921
  31. The American University, Beirut, Lebanon
  32. Carte De Visite Of Edmonia Lewis, 1870
  33. Algerian Sahara - USGS Earth as Art
  34. Santa Fe, NM, Wagon Train
  35. Human Skeleton: Lateral view in Crouching Posture
  36. Vintage World War II poster featuring a fighter plane and a ship patrolling the sea
  37. Malaspina Glacier - USGS Earth as Art
  38. On The Dark Road. Illustration From The Charles Dickens Novel Dombey And Son
  39. Karman Vortices - USGS Earth as Art
  40. Anatomy of male muscular system, front view
  41. Detail of hieroglyphic writing. Museum of Fine Arts. Budapest. Hungary
  42. Richelieu celebrating Mass at the Camp of La Rochelle before the Army
  43. The Swedish Warship Vasa
  44. Illinois - USGS State Mosaic
  45. Running On The Wind
  46. Colorado - USGS State Mosaic
  47. Giant Panda
  48. To Polish The Sun