2002. Bernardin-Lochmueller & Associates. Natural_features_usgs_in is a point shapefile showing the locations and attribute values of natural features extracted from the Geographic Names In... State of Indiana.
2004. United States National Park Service and Bernardin-Lochmueller & Associates. National_Natural_Landmarks_IN.SHP is a polygon shapefile that contains all national natural landmarks in Indiana. Information regarding landmark si... State of Indiana.