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  1. Compsognathus
  2. President John F. Kennedy signing the Equal Pay Act
  3. Mars
  4. Wyoming - USGS State Mosaic
  5. Marie Curie
  6. Coelophysis
  7. Discovery Hind Leg Of The Dinosaur Diplodocus, By Henry Fairfield Osborn In 1898
  8. Joan of Arc hears heavenly voices in the Forest
  9. A Black Soldier In the Union Army Leading A Supply Train, 1864
  10. Bright Periodic Table - Black, Classic Text
  11. Lifecycle of a Frog
  12. Mineralogie III
  13. The Sun
  14. Beer, the Hop Plant, 1836
  15. Artillery drill in fort during the American Civil War
  16. Yukon Delta - USGS Earth as Art
  17. Portrait of Anton Chekhov (1860-1904) 1902
  18. Pachycephalosaurus
  19. Napoleonic Wars, Polish Infantry, Regiment of the Vistula, Fusilier and Grenadier
  20. New York Under The Blue Laws, 1895
  21. Alaska - USGS State Mosaic
  22. Oregon - USGS State Mosaic
  23. Rice Terraces, Longsheng Ping'an, Guangxi
  24. Northern Norway - USGS Earth as Art
  25. Harriet Tubman, 1911
  26. Teachers II Yellow
  27. Dragon Lake - USGS Earth as Art
  28. Anatomy of human pancreas, with labels
  29. Printing Press at Le Petit Journal, created by H, Marinoni, 1860s
  30. Joachim Murat joins the regiment of Chasseurs des Ardennes, in 1787
  31. Illustration of action potential of a nerve cell
  32. Molecule Testosterone
  33. Pipes at Nesjavellir Geothermal Power Plant, Iceland
  34. Polish Lancers at Somosierra, Nov, 30, 1808, By Louis Bombled
  35. Carte De Visite Of Edmonia Lewis, 1870
  36. Australia - USGS Earth as Art
  37. Farmers Wanted for Survival on Mars
  38. The Dardzha Monster - USGS Earth as Art
  39. Byrd Glacier - USGS Earth as Art
  40. Italy, Sicily, Siracusa, Monte Lauro, wind turbine
  41. Brain surface anatomy, with labels
  42. Dinosaur Skeleton, 1921
  43. Richelieu celebrating Mass at the Camp of La Rochelle before the Army
  44. Ganges River Delta - USGS Earth as Art
  45. Molecule Estrogene
  46. Alphabet For Children, 2002
  47. Barbet Dagobert was Trained to Pay Suppliers and Return with Receipts
  48. Civil War, Bull Run, 1861