Explore Chicago Collections
https://explore.chicagocollections.org/records/?browse-topics=yes&f2-topics=Events+%26+Movements%3A%3AWorld+War+I&f3-topics=Government+%26+Leadership%3A%3AMilitary&f4-types=Archival+Collections&f7-types=Archival+Collections&f8-institutions=Chicago+History+Museum