State of Illinois historic preservation plan.
Subtitle: Presented to National Park Service, September 1, 1970.
Contributors: United States. National Park Service.
Publisher: Illinois Dept. of Conservation
Published: 1971
Place of publication: [Springfield]
Language: eng
Subjects: Historic sites -- Illinois.; Historic buildings -- Illinois.; Historic preservation -- Illinois.
Notes: Prepared with the assistance of De Leuw, Cather & Company, Planners and Engineers of Chicago and the Illinois Historic Sites Advisory Council.