Explore Chicago Collections
https://explore.chicagocollections.org/records/?f4-types=Archival+Collections&f3-topics=Government+%26+Leadership%3A%3ACivil+Rights&sort=title&f2-topics=Natural+%26+Built+Environments%3A%3ARailways&f1-topics=Government+%26+Leadership%3A%3ACivil+Rights&f5-cities=Chicago