Hidden Lake Forest Preserve [site survey, ecological reconstruction, ecosystems/ecological value, slope, hydrology, soils, minerals, cultural improvements, and neighboring land use] (3.5833)
Date: circa 1975Creator: Forest Preserve District of DuPage County
Type: Map
Description:Subtitle above is summary of sheet-titles. A portion of this 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).
Extent: 9 sheets stapled
1986/06: Ross Brocato to George Ware (3.70011)
Creator: Brocato, Ross, Delly, John G.
Type: Document
Description:A set of two documents. The first is a letter from Ross Brocato to George Ware. The second is a research report update of the Arbor Lake Diatom Study by Chicago Research Divers dated May, 1986.
Extent: 7 sheets
1982/04/26: Bob Wilson to George Ware (3.80501)
Date: April 26 1982Creator: Wilson, Bob
Type: Document
Description:A set of two documents. The first is a letter from Bob Wilson of the Chicago Research Divers to Dr. George Ware of the Morton Arboretum. The second is an issue of the Chicago Divers' Journal dated April, 1982 and contains the CRD Project Arbor Report.
Extent: 20 sheets