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  1. Bill Tilden, at the opening of the U.S. Pro Tennis Championship Tournament
  2. Aurora borealis, 1872
  3. Distillation apparatus, 19th century
  4. Home Of John D. Rockefeller, Forest Hill, Cleveland, Ohio
  5. George Washington hears his mother convince him not to go to sea as a midshipman
  6. Pitch Lake, Trinidad
  7. Students At University Of Chicago Campus
  8. Head and neck anatomy, historical artwork
  9. Wooden Gate At Resort
  10. Winston Churchill Sketches Magazine Page
  11. Ortelius's map of Switzerland, 1570
  12. Differential analyser, 1954
  13. The Parthenon viewed from Propylaea, The Acropolis, Athens, Greece
  14. 17th Century fire fighting, artwork
  15. Light bulb, historical artwork
  16. Washington DC
  17. Samurai warriors attacking each other
  18. Lithograph After Makataimeshekiakiah, Or Black Hawk By Charles Bird King
  19. Lincoln Memorial, Washinton D.C., USA
  20. Statue of Urania, Muse of Astronomy, Vatican Museums
  21. Spillway At Gatun Dam
  22. Distillation apparatus, 18th century
  23. Maori Chief
  24. Water wheel
  25. Antique map of the Middle East
  26. Brewery kettle, 19th century
  27. Proclamation by English colonial Governor Bellomont, 1698
  28. Propylaeum, gateway to the Temple of Artemis, Roman city, Jerash, Jordan
  29. Taming of the West: The Way of the Law
  30. Opening Of The Los Angeles Aqueduct
  31. George Washington By Gilbert Charles Stuart
  32. Close-up of a statue of Emperor Augustus, Monte Solaro, Capri, Campania, Italy
  33. Salem's old cemetery, Salem, MA, New England, USA
  34. Factory Damaged In The Johnstown Flood
  35. Mission Santa Ynez or Ines, Solvang, California
  36. A Camanchee Family After George Catlin
  37. Sojourner Truth (c1797-1883)
  38. Interior View Of Independence Hall, Philadelphia By M. Rosenthal
  39. Lincoln Memorial, Washinton D.C., USA
  40. Portrait of Henry Knox (1759-1806)
  41. Katherine Johnson (1918-2020)
  42. Medieval physician and pharmacist
  43. Antique map of Asia Minor
  44. U.S. Army Soldiers Driving Tractor
  45. St. Patrick's Cathedral, New York
  46. Telephone switchboard operator, 1914
  47. Kitchen Of The White House
  48. Mankind in the Making