1973. 2012-11-06T20:29:39Z. 2012-11-06T20:29:39Z. Pierce, Kenneth Lee. Dept. of the Interior, U.S. Geological Survey. English. Public. Yellowstone National Park.
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1973. 2012-11-07T14:33:33Z. 2012-11-07T14:33:33Z. Richmond, Gerald Martin, 1914-. U.S. Geological Survey. English. Public. Idaho, Fremont County, Yellowstone National Park, Wyoming, and Teton County.
1973. 2012-11-07T14:20:51Z. 2012-11-07T14:20:51Z. Richmond, Gerald Martin, 1914-. Dept. of the Interior, U.S. Geological Survey. English. Public. Yellowstone National Park.
1973. 2007-04-25T13:13:43Z. 2011-06-03T19:41:11Z. Geological Survey of Canada. The Survey. English. Public. Northwest Territories and Mackenzie.
1973. 2007-04-23T14:19:36Z. 2011-03-28T21:44:37Z. Geological Survey of Canada. The Survey. English. Public. Northwest Territories and Mackenzie.