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Images related to Yellowstone Volcano Observatory.
The first photograph taken of Devil’s Slide, Montana (just north of Yellowstone National Park along the Yellowstone River). Photo by William Henry Jackson in either 1871 or 1873.
The first photograph taken of Devil’s Slide, Montana (just north of Yellowstone National Park along the Yellowstone River). Photo by William Henry Jackson in either 1871 or 1873.
Geologist Ferdinand Hayden at work with a rock hammer. USGS photo by William Henry Jackson, 1870.
Geologist Ferdinand Hayden at work with a rock hammer. USGS photo by William Henry Jackson, 1870.
Henry Wood Elliott during a geological expedition in 1870. Photo by William Henry Jackson.
Henry Wood Elliott during a geological expedition in 1870. Photo by William Henry Jackson.
Undated portrait of Jim Bridger (1804-1881). Published in Gaston's Portland, Oregon: Its History and Builders, volume 1 (1911), image in the public domain.
Undated portrait of Jim Bridger (1804-1881). Published in Gaston's Portland, Oregon: Its History and Builders, volume 1 (1911), image in the public domain.
William Clark's 1814 map, indicating the route of John Colter during the winter of 1807-1808. (Library of Congress, Geography and Map Division, Washington, D.C.)
William Clark's 1814 map, indicating the route of John Colter during the winter of 1807-1808. (Library of Congress, Geography and Map Division, Washington, D.C.)