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150th anniversary: Nathaniel P. Langford of the Washburn–Langford–Doane Expedition first observed...

Name: 150th anniversary: Nathaniel P. Langford of the Washburn–Langford–Doane Expedition first observed...
Start: 2020-09-18

Fri, September 18, 2020

6 yr ago

Source

In 1870, Nathaniel P. Langford of the Washburn–Langford–Doane Expedition first observed a geyser in the Wyoming Territory erupting at regular intervals, naming it Old Faithful (video featured).

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Source, method and history

Source

Wikipedia

How we know

Wikipedia "On this day" selected anniversary, 150 years (1870 to 2020).

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annual

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Changes

2026-09-25: added to 2020-09-18