38436
Gray, Lois, Rexroad, Carl Buckner, Sturgeon, Polly R.
2019
SPG07-2019
Indiana Geological and Water Survey, 2019, Geologic story of Spring Mill State Park: Indiana Geological and Water Survey State Park Guide 07-2019.
2019 update to the Indiana Geological and Water Survey State Park Guide 07: Spring Mill State Park
Marker lat / long: 38.732415, -86.416208 (WGS84)