38677
Ault, Curtis H.
1997
MM60
Ault, C. H., 1997, Map of Posey County, Indiana, showing structure on the Springfield Coal Member of the Petersburg Formation (Pennsylvanian): Indiana Geological Survey Miscellaneous Map 60, scale 1:65,790.
Indiana Geological & Water Survey - Miscellaneous Map 60
Marker lat / long: 38.035045, -87.851166 (WGS84)