1908. 2013-03-14T16:44:03Z. 2013-03-14T16:44:03Z. Martin, G. C. (George Curtis), 1875-1943. The Survey. English. Public. Maryland, Allegany County, Garrett County, Pennsylvania, Fayette County, Somerset County, West Virginia, Preston County, États-Unis, Pennsylvanie, and Virginie-occidentale.
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1908. 2013-03-14T15:53:49Z. 2013-03-14T15:53:49Z. Russell, Israel C. (Israel Cook), 1852-1906. The Survey. English. Public. Michigan, Lenawee County, Livingston County, Monroe County, Oakland County, Washtenaw County, Wayne County, and États-Unis.
1908. 2013-03-14T15:55:13Z. 2013-03-14T15:55:13Z. Todd, J. E. (James Edward), 1846-1922. The Survey. English. Public. South Dakota, Clay County, Union County, Nebraska, Dakota County, Dixon County, Iowa, Plymouth County, Sioux County, États-Unis, and Dakota du sud.
1908. 2013-03-14T16:42:41Z. 2013-03-14T16:42:41Z. Schrader, Frank C. (Frank Charles), 1860-1944. U.S. Geological Survey. English. Public. Kansas and États-Unis.