Explore Chicago Collections
https://explore.chicagocollections.org/records/?f4-institutions=University%20of%20Chicago&f3-topics=Work%3A%3AAdvertising&f7-topics=Work%3A%3AAdvertising&f1-institutions=University%20of%20Chicago&f2-cities=Elgin&browse-topics=yes&f6-topics=Natural%20%26%20Built%20Environments%3A%3ARailways