Explore Chicago Collections
https://explore.chicagocollections.org/records/?f4-types=Archival%20Collections&browse-topics=yes&f1-topics=Events%20%26%20Movements%3A%3AEastland%20Disaster&sort=title&f3-topics=Events%20%26%20Movements%3A%3AEastland%20Disaster&f2-topics=Events%20%26%20Movements::Disasters&f5-institutions=Chicago%20History%20Museum