• Healthy Brain/Unhealthy Brain
  • Life on a Wharf Piling
  • Ships of the Desert...
  • National Geographic October 1983
  • The bridge.
  • A Horse in the Dining Room
  • Bird Migration in the Americas
  • Squatters in Black Tie—Jackass Penguins
  • Pyramids Gatefold
  • Life Sense of Sight
  • Life in a Mountain Stream
  • The Incredible Machine
  • Where Oil and Wildlife Mix
  • National Geographic Society
  • Machu Picchu: A Citadel of the Incas, Report of the Explorations and Excavations made in 1911, 1912 and 1915 under the auspices of Yale University and The National Geographic Society
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