1909. Bownocker, J. A. 1865-1928. Scale [1:506,880]. Eight miles to one in. Geologic formations shown by colors and symbols. "Based on preceding maps by Newberry and Orton." "A. Hoe... Geological Survey of Ohio.
Search Results
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.