Explore Chicago Collections
https://explore.chicagocollections.org/records/?f6-topics=Events%20%26%20Movements%3A%3ADemonstrations&f3-topics=Natural%20%26%20Built%20Environments%3A%3AWaterways&f4-topics=Natural%20%26%20Built%20Environments%3A%3AParks&f5-neighborhoods=Loop&f2-cities=Chicago&browse-topics=yes