Explore Chicago Collections
https://explore.chicagocollections.org/records/?browse-names=yes&f1-names=de+Martonne%2C+Emmanuel&f2-topics=Government+%26+Leadership%3A%3APolitics&f3-institutions=Alliance+Fran%C3%A7aise&f4-topics=Government+%26+Leadership%3A%3APolitics&f5-types=Archival+Collections