1. Earthquake hazard map of the Henrys Lake quadrangle, Idaho and Montana [cartographic material] Yale Public content 1972. 2013-04-04T19:40:56Z. 2013-04-10T17:34:26Z. Witkind, Irving Jerome, 1917-. U.S. Geological Survey. English. Public. Idaho, Henrys Lake Region, Fremont County, Montana, Beaverhead County, and Gallatin County.