1893. 2003-07-17T11:59:38Z. 2016-11-29T22:12:15Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington (D.C.) and Washington Metropolitan Area.
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1891. 2010-09-09T13:43:45Z. 2015-10-27T22:25:38Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington (D.C.) and Washington Metropolitan Area.
1895. 2010-09-09T13:41:57Z. 2015-10-27T22:25:38Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington Metropolitan Area.
1901. 2003-07-16T14:52:28Z. 2015-10-27T22:20:38Z. Darton, Nelson Horatio, 1865-1948. U.S. Geological Survey. English. Public. Washington (D.C.) and Washington Metropolitan Area.
1900. 2010-09-08T20:15:08Z. 2015-10-27T22:25:38Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington Metropolitan Area and Washington (D.C.).
1929. 2003-07-23T14:26:01Z. 2015-10-27T22:20:40Z. Geological Survey (U.S.). Dept. of the Interior, U.S. Geological Survey. English. Public. Washington (D.C.) and Washington Metropolitan Area.
1917. 2003-07-15T15:35:55Z. 2015-10-27T22:20:37Z. Geological Survey (U.S.). Department of the Interior, U.S. Geological Survey. English. Public. Washington (D.C.) and Washington Metropolitan Area.
1898. 2010-09-09T13:39:59Z. 2015-10-27T22:25:38Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Washington Metropolitan Area.
1984. 2019-01-17T15:32:57Z. 2019-01-17T15:32:57Z. ADC (Firm). ADC. English. cartographic image. Public. Washington Metropolitan Area, Washington (D.C.) Metropolitan Area., and Washington (D.C.).
1947. 2003-07-23T12:22:55Z. 2015-04-21T22:11:50Z. Geological Survey (U.S.). Federal Works Agency, Public Roads Administration ; For sale by the Supt. of Docs., U.S. G.P.O. English. Public. Washington (D.C.) and Washington Metropolitan Area.