1. Geologic map of the Bramwell quadrangle, West Virginia-Virginia [cartographic material] Yale Public content 1968. 2012-02-17T19:48:46Z. 2012-03-05T17:41:32Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. West Virginia, McDowell County, Mercer County, Virginia, and Tazwell County.