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  1. Lewis And Clark, 1805
  2. Lewis and Clark, with their guide Sacagawea in the Bitterroot Mountains
  3. Jedediah Smith (1799-1831)
  4. Lindbergh with his airplane, 1928
  5. Sir Edmund Hillary
  6. Leif Eriksson (10th century) sights land in America, 1893
  7. Captain Roald Amundsen at the South Pole, 1912
  8. Portrait of Sir Walter Raleigh, 1598
  9. Signature of John Hancock
  10. Christopher Columbus (1451-1506)
  11. Christopher Columbus's Departure from the Harbour of Palos
  12. Jack London (1876-1917) travelling in a canoe
  13. David Crockett By Asher Brown Durand After A. L. De Rose
  14. Jacques Cousteau (1910-1997), French oceanographer
  15. Captain Roald Amundsen
  16. Portrait of naturalist and geologist Charles Darwin
  17. Sir Walter Raleigh , English explorer
  18. Kit Carson, American frontiersman
  19. Cape Disappointment State Park - Lewis & Clark
  20. Hiram Bingham (1875-1956)
  21. Alfred Percival Maudslay
  22. Hiram Bingham (1875-1956)