Map
Conceptual Trail Design; Danada to Hidden Lake Regional TrailSeptember 10 1996
Forest Preserve District of DuPage County
Map
Water service connection, The Morton Arboretum, 3 South 555 Leask Lane, Lisle, ILSeptember 28 2000
Harding Lawson Associates
Map
Plat of Survey [South of Butterfield Rd., Including Boundary Between Milton and York Townships]April 5 1977
Steinbrecher Jr., Harold F.
Map
Final engineering plans and specifications for the Morton Arboretum roadway improvement plans, phase IAugust 17 1990
Roake & Associates, Inc.
Map
Hidden Lake Forest Preserve [site survey, ecological reconstruction, ecosystems/ecological value, slope, hydrology, soils, minerals, cultural improvements, and neighboring land use]circa 1975
Forest Preserve District of DuPage County
Map
North-South Tollway, Ogden Avenue & East-West Tollway interchange, mile post 19.0 to mile post 20.7; Contract C. I. P. 615, McDonough Associates, Inc., design section engineer.February 9 1987
Illinois State Toll Highway Authority
Map
North-South Tollway [engineering drawings] Contract D6, McDonough Associates, Inc.Illinois State Toll Highway Authority
Map
Proposed topsoil stockpile area, Hidden Lake Forest PreserveAugust 28 1984
Forest Preserve District of DuPage County
Map
Map Showing the Morton Arboretum and the Adjoining Lands Owned by the Joy Morton Estate in DuPage County, Illinois, Compiled from Surveys and Deed RecordsSeptember 1 1940
Steinbrecher, Harold F.