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  1. Artillery drill in fort during the American Civil War
  2. The Earth's Annual Orbit
  3. President Kennedy greets Peace Corps Volunteers on the White House South Lawn
  4. Definition of anthropology
  5. Joan of Arc hears heavenly voices in the Forest
  6. Mission Santa Ynez or Ines, Solvang, California
  7. 'London', plate 38 from 'Songs of Experience', 1794
  8. Conceptual image of chromosome
  9. Brachiosaurus
  10. That Dam Cloud
  11. Human bones
  12. The Man and the Alembic
  13. Ida B. Wells, 1891
  14. Joachim Murat Reviews a Company of Black Soldiers in Koenigsberg
  15. Conceptual image of DNA
  16. Humpty Dumpty
  17. Conceptual image of human lungs and rib cage
  18. Conceptual image of influenza causing flu
  19. Comet of 1811, 19th century artwork
  20. Shooting An Oil Well
  21. Portrait of Anton Chekhov (1860-1904) 1902
  22. Microscopic view of plant tissues
  23. Conceptual image of DNA
  24. Ceratosaurus
  25. Old Mother Hubbard, from Old Mother Goose's Rhymes and Tales
  26. The muscles of the hand
  27. Human skeleton
  28. Soybeans, early growth, Minnesota
  29. Portrait of Henry Knox (1759-1806)
  30. Women working in a munitions factory in 1915
  31. California - USGS State Mosaic
  32. Vintage American history print of a younger President Theodore Roosevelt
  33. Waziristan Hills - USGS Earth as Art
  34. Apatosaurus
  35. 1980's UK Womans Weekly Magazine Cover
  36. Battle of Waterloo, June 18, 1815, 3rd Grenadier of Guard commanded by Cambronne
  37. Abstract Alphabet
  38. Mankind in the Making
  39. ABCs
  40. Body Plans of Extinct Reptiles
  41. Human Skin
  42. Euoplocephalus
  43. Science classroom
  44. School Days
  45. Artist's concept depicting the evolution of a lobe-finned fish to an amphibian
  46. Lifecycle of a Frog
  47. Royal Court of French King Francis I at the Castle of Blois
  48. Chalkboard with greetings written in English, French and German