Sign Board reads, 'Bear Feeding Ground', at the Yellow Stone National Park in Wyoming, USA. Tourists look at grizzly bears feeding in a field. Seagulls feed near the bears.
View of the Tower Falls at the Yellow Stone National Park in Wyoming, USA. Sign board reads, 'Tower Falls Height 132 feet'. View of the waterfalls emerging from the mountains
Sign board reads, 'Basalt Flows - The columnar structure is caused by contraction in cooling', View of the Basalt flows at the Yellow Stone National Park in Wyoming, USA. A road runs along the length of the Basalt Flows. Vehicular traffic on the road.
Sign board reads, 'Buffalo Ranch'. View of the Buffalo Ranch at the Yellow Stone National Park in Wyoming, USA. Bison graze in the field. View of sun setting.
Activities of the U.S. Army Air Corps in Maryland. Two aircraft lay a smoke screen over a wooded area. The tail section of the aircraft in the foreground. The smoke screen covers the ground. The aircraft lay the smoke screen in a circle.
U.S. Army Air Forces Boeing P-12s in flight in California. The planes fly in formation. 18 P-12s fly in a formation over the clouds.
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