Explore Chicago Collections
https://explore.chicagocollections.org/records/?f2-topics=Events+%26+Movements%3A%3ADemonstrations&f3-topics=Natural+%26+Built+Environments%3A%3AParks&f4-institutions=Chicago+History+Museum&f5-topics=Events+%26+Movements%3A%3ADemonstrations&f6-neighborhoods=Pullman&f7-neighborhoods=Loop