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1972. 2012-11-06T16:30:20Z. 2012-11-06T16:30:20Z. Richmond, Gerald Martin, 1914-. Dept. of the Interior, U.S. Geological Survey. English. Public. Yellowstone National Park.
1972. 2012-11-06T16:35:59Z. 2012-11-06T16:35:59Z. Richmond, Gerald Martin, 1914-. Dept. of the Interior, U.S. Geological Survey. English. Public. Yellowstone National Park.
1972. 2012-11-15T16:51:57Z. 2012-11-15T16:51:57Z. Geological Survey (U.S.). Dept. of the Interior, U.S. Geological Survey. English. Public. Yellowstone National Park.
1972. 2013-04-12T18:23:38Z. 2013-04-18T14:13:43Z. Pessl, Fred. U.S. Geological Survey. English. Public. Connecticut and Hartford Region.
