Explore Chicago Collections
https://explore.chicagocollections.org/records/?f1-topics=Events%20%26%20Movements%3A%3AFairs%20%26%20Conventions&f4-types=Archival%20Collections&sort=title&f3-types=Archival%20Collections&f2-topics=Daily%20Life%20%26%20Identity::Population%20Change%20%26%20Movement