AE Harmon is an archaeological site that was in use during the Archaic, Late Woodland, Emergent Mississippian, and Mississippian periods, according to the most recent archaeological evidence. This site is located near the American Bottom in modern-day Edwardsville, Illinois. There were a total of three recorded excavations; one took place during the 1990s by the Southern Illinois University Edwardsville (SIUE) Contract Archaeology Program (CAP) and the two others took place during the early 2000s. A number of features were excavated, uncovering various different artifacts, plant remains and providing evidence for during which the site was in use. With all the data gained, it was predicted that AE Harmon was a horticultural environment.