In this lot:

  1. The Geologic Story of Colorado National Monument - 1965
  2. The Climatron Missouri Botanical Gardens
  3. Life In The Geyser Basins -1971 
  4. Prehistoric People of the Northern Southwest
  5. Haleleakaola Guide - 1959
  6. Wupatki Ruins Trail Booklet
  7. Wuptaki National Monument Pamphlet
  8. Big Bend National Parks, Texas 1961
  9. Fountain Paint Pot Nature Trail Yellow Stone National Park