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Subject
- Park rangers.2
- Aerial views.1
- Albright, Horace M. (Horace Marden),1890-1987.1
- American bison.1
- Bears.1
- Horsemanship.1
- Landscapes.1
- Lava.1
- National parks and reserves--United States.1
- National parks and reserves--Wyoming.1
- Old Faithful Geyser (Wyo.)1
- Roosevelt, Franklin D. (Franklin Delano), 1882-1945--Influence.1
- Ruined buildings--Italy.1
- Smoke.1
- Trees.1
- Volcanic eruptions.1
- Waterfalls.1
- Wilbur, Ray L. (Ray Lyman), 1875-1949.1
- Yellowstone National Park.1