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Timothy H. O'Sullivan
48. Shoshone Falls, Snake River, Idaho, Main Fall, 210 feet from upper to lower level, width of fall 800 feet from upper to lower level; Height of Canon wall at the falls, 1,000 feet.
[Wheeler Survey, Explorations and Surveys West of the 100th Meridian]
1871-1874 (survey), 1874 (expedition)