Explore Chicago Collections
https://explore.chicagocollections.org/records/?f6-topics=Work%3A%3AAdvertising&browse-topics=yes&f4-types=Archival%20Collections&f5-topics=Work%3A%3AAdvertising&f3-topics=Work%3A%3AAdvertising&f1-topics=Creativity%20%26%20Thought::Fine%20Arts