Explore Chicago Collections
https://explore.chicagocollections.org/records/?f2-institutions=University%20of%20Chicago&f5-cities=St.%20Charles&f7-topics=Work%3A%3AAdvertising&browse-topics=yes&f1-cities=St.%20Charles&f3-topics=Work%3A%3AAdvertising&f6-cities=St.%20Charles&sort=title