Map
Morton Arboretum [Aerial Photograph and] Conservation Plan Map, Kane-DuPage Soil Conservation District.June 1964
U.S. Soil Conservation Service
Map
Soil Survey, Morton Arboretum, Lisle, Illinois [Septic filter field interpretation]circa 1970
U.S. Soil Conservation Service
Map
Soil Survey, Morton Arboretum, Lisle, Illinois [Urban interpretation]circa 1970
U.S. Soil Conservation Service
Map
Soil Survey, Morton Arboretum, Lisle, Illinois [Wetness hazard interpretation]circa 1970
U.S. Soil Conservation Service