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  1. United States Constitution - Horizontal
  2. Vintage Civil War print of the Battle of Gettysburg
  3. Children Love the World
  4. The Milky Way and the other members of our Local Group of galaxies
  5. Signature of George Washington
  6. Roman Roads
  7. Pathways Educational Poster
  8. Dental X-ray
  9. Wright Flyer sculpture at Wright Brothers National Memorial, North Carolina
  10. A pair of Allosaurus dinosaurs explore the remains of a Diplodocus carcass
  11. Tennessee - USGS State Mosaic
  12. Puerto Rico - USGS State Mosaic
  13. Wright Flyer sculpture at Wright Brothers National Memorial, North Carolina
  14. Wright Flyer sculpture at Wright Brothers National Memorial, North Carolina
  15. Tyrannosaurus
  16. Allosaurus
  17. Triceratops
  18. Velociraptor
  19. Euoplocephalus
  20. Compsognathus
  21. Rice Terraces, Longsheng Ping'an, Guangxi