Explore Chicago Collections
https://explore.chicagocollections.org/records/?f3-topics=Government+%26+Leadership%3A%3AMilitary&sort=title&f2-topics=Government+%26+Leadership%3A%3AMilitary&browse-names=yes&=&f1-topics=Events+%26+Movements%3A%3AGreat+Chicago+Fire&f4-topics=Events%20%26%20Movements::Fairs%20%26%20Conventions