Aztalan has remained a mystery since the early nineteenth century when it was discovered by settlers who came to the Crawfish River, fifty miles west of Milwaukee. Who were the early indigenous people who inhabited this place? When did they live here? Why did they disappear?      Birmingham and Goldstein attempt to unlock some of the mysteries, providing insights and information about the group of people who first settled here in 1100 AD. Filled with maps, drawings, and photographs of artifacts, this small volume examines a time before modern Native American people settled in this area. Distributed for the Wisconsin Historical Society Press.