1896. 2013-03-13T15:25:59Z. 2021-09-27T19:50:53Z. Campbell, Marius R. (Marius Robinson), 1858-1940. Engraved and printed by the U.S. Geological Survey, Bailey Willis, Editor of Geologic Maps, S.J. Kübel, Chief Engraver. English. Public. Virginia and West Virginia.