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  1. Lacrosse Playing, 1851
  2. Grain
  3. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  4. Development of the English alphabet
  5. Sage Agate B
  6. Weak Force
  7. Zig Zag Pattern Crazy Lace Agate
  8. Viking longboats
  9. Normal neck, X-ray
  10. Napoleon Bonaparte at the Royal Military School of Brienne
  11. The Capitol -East Front
  12. The bones of the jaw
  13. Pi to 2198 decimal place
  14. Four kinds of lamp: Edison, Maxim, Swan, and Werdermann
  15. Eye
  16. Chalkboard Periodic Table
  17. The Peacocks Complaint, From The Book Baby's Own Aesop By Walter Crane C.1920
  18. The Fox and the Crow, illustration from Aesop's Fables
  19. Dandelion - Botanical Illustration
  20. Civil War painting of Union and Confederate troops at The Battle of Shiloh
  21. Abraham Lincoln and Stephen A. Douglas debating at Charleston, Illinois
  22. The bones of the trunk
  23. Apache Group, c1906
  24. Dental X-ray
  25. External anatomy of the human eye (with labels)
  26. Oregon. Close-up of Graveyard Point Plume Agate stone
  27. Strings
  28. The Presidents Educational Poster, 2013
  29. George Washington, by Rembrandt Peale, c. 1850
  30. Vintage Civil War print of the Battle of Cold Harbor
  31. Davy Crockett: Hero of the Alamo
  32. Blue Watercolor Agate Rectangle
  33. The lumbar vertebrae
  34. Sense of Wonder
  35. Meat For the Tribe, 1891
  36. Composite of 110 different species of ducks and geese
  37. Never Stop Learning
  38. Genius Handlettering
  39. Constitution of the united states of america
  40. Deschutes Jasper, Oregon
  41. Moon Chart II
  42. Normal spine, X-ray
  43. Neon Periodic Table
  44. Electromagnetic Radiation
  45. Diesel Motor
  46. Sinking Of The Titanic By Willy Stoewer
  47. Scanning electron micrograph of a human T cell
  48. Signature of George Washington