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Judy Hughes, Northbrook Historical Society
Judy Hughes, Northbrook Historical Society
12:37 pm CDT September 29, 2014

Northbrook as we know it today is surrounded at least partially on three sides by Cook County forest preserves, and 13 of the 36 one-square-mile sections that make up Northfield Township contain forest preserve land. 

But what we now call “forest preserves” were not always covered by old-growth forests. In fact, some of these preserves once were covered with farm crops.