Explore Chicago Collections
https://explore.chicagocollections.org/records/?f1-topics=Natural+%26+Built+Environments%3A%3AWaterways&f2-topics=Events+%26+Movements%3A%3AEarly+Chicago+%281837-1871%29&f3-topics=Events%20%26%20Movements::Before%20Chicago%20%28until%201837%29