Explore Chicago Collections
https://explore.chicagocollections.org/records/?f3-topics=Events%20%26%20Movements%3A%3AFairs%20%26%20Conventions&f4-types=Archival%20Collections&f1-institutions=Chicago%20History%20Museum&f2-topics=Natural%20%26%20Built%20Environments::Air%20Travel&f5-topics=Work::Industries&f6-institutions=Chicago%20History%20Museum