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Hidden Lake Forest Preserve: proposed site & grading plan
1 inch = 200 feet
July 1 1983
A portion of the Forest Preserve land parcel is leased by the Arboretum as a part of the Illinois State Toll Highway agreement of 1985. For a representation of the area leased, see DuPage County. Forest Preserve District. Hidden Lake Forest Preserve ... Arboretum-Forest Preserve District cooperative research program space study (SURV:B VI (c) 1).