Explore Chicago Collections
https://explore.chicagocollections.org/records/?f1-topics=Natural%20%26%20Built%20Environments%3A%3ACity%20Planning&f3-topics=Natural%20%26%20Built%20Environments%3A%3AParks&f5-cities=Chicago&f2-cities=Chicago&f4-topics=Natural%20%26%20Built%20Environments::City%20Planning&f6-institutions=Chicago%20History%20Museum