Explore Chicago Collections
https://explore.chicagocollections.org/records/?f3-neighborhoods=Loop&f6-cities=Chicago&f2-topics=Events%20%26%20Movements%3A%3AIroquois%20Theater%20Fire&f1-topics=Events%20%26%20Movements%3A%3AIroquois%20Theater%20Fire&sort=title&f7-institutions=Chicago%20History%20Museum