From: Buried Beneath a Farmstead
In the state of Illinois, in the middle of the continental United States, in the river valley named for the Native American group and from which the state takes its name, near where the Illinois River meets the Mississippi, lies the archaeological site known as Koster. Koster's importance to the recognition of the existence of deeply buried sites is not often articulated, but it should be.
In 1968, Stuart Struever was a faculty member in the anthropology department at Northwestern University in Evanston, Illinois. He was a "down-stater," however, having grown up far from Chicago in the small town of Peru, Illinois, and he never lost the ability to speak the language of the down-stater. And so it was that he made true friendships among the landowners of the Lowilva, the local name for the Lower Illinois Valley, where the Mississippi River meets the Illinois. Among the life-long friends he made were Theodore "Teed" Koster and his wife Mary, retired farmers who just happened to have an archaeological site on their property, who just happened to be interested in the past.
It's really not coincidence, you know.