1909. New-York Coal Company. Scale not given. Map traced. W.C.W. Angler, Mining and Civil Engineer, Wellston, Ohio ; original map by J.W. Jones, Civil and Mining Engineer, New ... New-York Coal Company.
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1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.
1947. Geological Survey of Ohio. Library's c.2 mounted on cloth backing. "Prepared in cooperation with Division of Labor Statistics, Department of Industrial Relations, Divisions o... Ohio. Division of Geological Survey.