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[Hidden Lake Forest Preserve, topographic survey] (3.5838)
Date: circa 1985Creator: Sidwell Company
Type: Map
Description:The topographic base map survey by Sidwell Company was completed May 2, 1975. Shown are proposed lakes, a part of the Urban Vegetation Laboratory, and the boundary of forest preserve land leased to the Arboretum; these features are drawn in with ink.
Extent: 1 sheet