| OF 53. |
Map of western Ohio showing wells reaching Knox unconformity (only Precambrian and Mt. Simon tests shown in Delaware and Morrow Counties). Scale: 1 inch equals about 4 miles. Posted through 1996. $6.00. |
| OF 59. |
"Newburg" (Silurian) carbonate zones: wells producing or having shows of 100 MCFG or 1 BO or more. Scale: 1 inch equals about 4 miles. Posted through 1996. $5.00. |
| OF 76. |
Map showing wells producing from Oriskany sandstone. Includes "Austinburg sandstone" in Ashtabula County and "Cambridge sandstone" in Guernsey County. Scale: 1 inch equals about 4 miles. Posted through 1996. $6.00. |
| OF 77. |
Map showing wells producing from Ohio Shale in eastern Ohio. Includes sandstones and siltstones within the Ohio Shale. Scale: 1 inch equals about 4 miles. Posted through 1996. $6.00. |
| OF 112. |
Map of Washington County showing wells completed in Devonian shales. Scale: 1 inch equals about 1 mile. Posted through 1996. $4.00. |
| OF 250. |
Borehole geophysical-log correlation network for Devonian shales in Lawrence County and vicinity, stratigraphic cross sections F'-F, G-G', H-H'. 1988. $4.00. See also OFR 88-2. |
| OF 251. |
Oil and gas fields and well base map for Lawrence County. Scale: 1 inch equals about 1 mile. 1988. $4.00. See also OFR 88-2. |