Explore Chicago Collections
https://explore.chicagocollections.org/records/?f1-topics=Natural+%26+Built+Environments%3A%3ARailways&f2-topics=Natural+%26+Built+Environments%3A%3AAir+Travel&f3-topics=Natural+%26+Built+Environments%3A%3AAir+Travel&f4-types=Archival+Collections&f5-neighborhoods=Lincoln+Park&f6-institutions=Chicago+History+Museum&f7-types=Archival+Collections