Explore Chicago Collections
https://explore.chicagocollections.org/records/?f2-topics=Work%3A%3ACommerce+%26+Trade&f4-cities=Chicago&f1-topics=Events+%26+Movements%3A%3AFairs+%26+Conventions&f3-topics=Work%3A%3ACommerce+%26+Trade&f5-types=Archival%20Collections&f6-institutions=University%20of%20Illinois%20at%20Chicago&f7-topics=Work::Commerce%20%26%20Trade&f8-institutions=University%20of%20Illinois%20at%20Chicago&f9-topics=Events%20%26%20Movements::Fairs%20%26%20Conventions