38653
Mackey, John C., Stellavato, Joseph, Tanner, George, Wilson, Amanda
1981
MM34
Tanner, G. F., Stellavato, J. N., and Mackey, J. C., 1981, Map of southern Posey County, Indiana, showing structure on Springfield Coal Member (V) of the Petersburg Formation (Pennsylvanian): Indiana Geological Survey Miscellaneous Map 34, scale 1:31,680.
Indiana Geological & Water Survey - Miscellaneous Map 34
Marker lat / long: 38.035045, -87.851166 (WGS84)