Explore Chicago Collections
https://explore.chicagocollections.org/records/?f2-topics=Events+%26+Movements%3A%3AFairs+%26+Conventions&f1-topics=Work%3A%3AIndustries&sort=title&f3-topics=Natural%20%26%20Built%20Environments::Air%20Travel&f4-topics=Natural%20%26%20Built%20Environments::Air%20Travel