GN 1. Preliminary report on potential hydrocarbon reserves underlying the Ohio portion of Lake Erie, by Michael J. Clifford. 9 p., 8 figs., 1975. $2.00.
GN 2. Sand and gravel resources of Madison County, Ohio, by Michael L. Couchot. Map (1:62,500), one sheet with text, 1975. $2.00.
GN 3. Potential natural gas resources in the Devonian shales in Ohio, by A. Janssens and Wallace de Witt, Jr. 12 p., 10 figs., 2 tables, 1 pl., 1976. Reprinted 1978. $4.00.
GN 4. Coal resources of a portion of the Pawpaw Creek watershed, Monroe, Noble, and Washington Counties, by Richard A. Struble, Horace R. Collins, and Richard M. DeLong. 16 p., 8 figs., 8 tables, 1976. $2.00.
GN 5. Limestone in the Tymochtee Dolomite(?) (Upper Silurian), Shawnee Township, Allen County, Ohio, by David A. Stith. 4 p., 1 fig., 2 tables, 1977. $1.50.
GN 6. Extent of till sheets and ice margins in northeastern Ohio, by George W. White. One sheet, 6 figs., 1 table, explanatory text, 1979. Out of print. Available for free download in PDF here. [5.4 MB]
See also Bulletin 68.
GN 7. Mapping beach widths for the Ohio portion of the Lake Erie shoreline along coastal erosion area profile lines, 1990 and 2004, by Erik R. Venteris, D. Mark Jones, and James McDonald. 14 p., 11 figs., 1 table, 2012. Available for free download in PDF here. [3.4 MB]