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