During an expedition to the Wyoming Territory, Henry D. Washburn observes and names the Old Faithful Geyser.
The Washburn Expedition of 1870 explored the region of northwestern Wyoming that two years later became Yellowstone National Park. Led by Henry D. Washburn and Nathaniel P. Langford, and with a U.S. Army escort headed by Lt. Gustavus C. Doane, the expedition followed the general course of the Cook–Folsom–Peterson Expedition made the previous year.
Watch: 18th September 1870: Washburn-Langford-Doane expedition to the Yellowstone region names Old Faithful
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Sources and further reading: Wikipedia — Washburn–Langford–Doane Expedition, Wyoming Territory, Henry D. Washburn, Old Faithful (CC BY-SA). Images: Wikimedia Commons.
