1956. 2011-04-19T17:41:29Z. 2012-02-14T23:29:15Z. Nichols, David R. (David Ryden), 1930-. U.S. Geological Survey. English. Public. Rhode Island, Washington County, and Newport County.
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1956. 2012-08-21T19:02:38Z. 2013-03-18T22:13:39Z. Pillmore, C. L., 1930-. U.S. Geological Survey. English. Public. Utah, Kane County, and Washington County.
1956. 2012-08-10T15:35:15Z. 2013-03-18T22:11:08Z. Pillmore, C. L., 1930-. U.S. Geological Survey. English. Public. Utah, Kane County, Washington County, Arizona, and Mohave County.
1956. 2012-08-17T13:28:03Z. 2013-03-18T22:12:51Z. Marshall, C. H. U.S. Geological Survey. English. Public. Utah and Washington County.
1956. 2012-08-10T20:29:36Z. 2013-03-18T20:17:38Z. Marshall, C. H. U.S. Geological Survey. English. Public. Utah and Washington County.
1956. 2012-08-20T17:41:15Z. 2013-03-18T22:13:19Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Utah, Washington County, Arizona, and Mohave County.
1956. 2012-08-10T20:22:07Z. 2013-03-18T22:11:13Z. Marshall, C. H. The Survey. English. Public. Utah and Washington County.