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Hayden Expedition – High Waves at Signal Point

On this day 150 Years ago! (August 15, 1871)
 
Soundings are taken on the eastern side of Yellowstone Lake near Signal Point. On a windy day that generates three-foot swells, the interim survey manager orders Graham and Alec Sibley to take the Annie onto the lake. It is a decision he will later regret…

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