Geology of Ohio Vol. V
1884 Maps
Edward Orton, State Geologist
1884 Maps
Edward Orton, State Geologist
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Files are 300 dpi DjVu ~3MB@ |
| Mahoning Valley Coal Field |
| Massillon Coal Field |
| Sections from Massillon Coal Field |
| Holmes, Coshocton and Tuscarawas Counties |
| Muskingum and Northern Perry Counties |
| Hocking Valley Coal Field |
| Vinton and Jackson Counties |
| Lawrence, Gallia and Scioto Counties |