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  1. Mushroom Chart I light
  2. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  3. Sigmund Freud
  4. Peter and the Mermaids
  5. The Spider and the Fly, illustration from Aesop's Fables
  6. Ball Play Of the Choctaw, 1840s
  7. Florence Nightingale (1820-1910) illustration from World Noted Women
  8. Sitting Bull - Lakota Sioux Tribe Chief, 1884
  9. Petrarch. Italian poet. The in Triumph of Love (15th c.) National Library, Madrid
  10. One, Two, Buckle my Shoe, from Old Mother Goose's Rhymes and Tales
  11. American History print of President Washington and Lincoln
  12. The bones of the lower back
  13. Circulatory system and brain, artwork
  14. Marie Curie
  15. Columbus, Map, 15th Century
  16. A simplified Herzprung Russell Diagram showing how stars are classified
  17. California, Palm Springs. Windmill Farm along North Indian Canyon Drive
  18. P-38 Lightning Technical: Retro Travel Poster
  19. Toad of Toad Hall
  20. Map of Armenia, Colchis, Iberia and Albania
  21. The Making of America
  22. Scottish regiment fighting German troops at Battle of Loos
  23. Behemoth and Leviathan
  24. Wire Frame Render of a Clock Mechanism
  25. Geometry tools
  26. Civil War print of Union cavalry soldiers charging a Confederate firing line
  27. Page Proof From Great Expectations, Charles Dickens's Hand Written Corrections, 1812
  28. 'Ar never gets off'
  29. Oil well pump jacks at Bakken Oil Field near Estevan, Saskatchewan, Canada
  30. World War I, Western Front
  31. Relief depicting a pharaoh making an offering, Temple of Luxor, Egypt
  32. Geometry tools
  33. Wright Flyer sculpture at Wright Brothers National Memorial, North Carolina
  34. Molecule Chili
  35. Detail of hieroglyphic writing. Museum of Fine Arts. Budapest. Hungary
  36. Circulatory system and brain, artwork
  37. Battle Of Gettysburg, 1863
  38. Sioux Dance, 1890
  39. Molecule Peppermint
  40. Pencils
  41. Base of human skull, inferior view, with labels
  42. Pinned broken leg, X-ray
  43. Mexican Revolution (1910-19). Train with wounded revolutionary fighters
  44. Costellazioni II
  45. European Travel
  46. Knights charging into battle
  47. Spruce Goose - Hughes H-4 Hercules Blueprint: Retro Travel Poster
  48. Vintage World War II poster featuring a fighter plane and a ship patrolling the sea