bn:01421256n
Noun Named Entity
Categories: 1871 in the United States, Wyoming Territory, Idaho Territory, Expeditions from the United States, 1871 in Wyoming Territory
EN
Hayden Geological Survey of 1871
EN
The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872. Wikipedia
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EN
The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872. Wikipedia