What is the square footage of this mansion in Duluth, Minnesota, operated by the University of Minnestoa Duluth as a historic house museum, indelibly linked with the Congdon name?
Chester Adgate Congdon:  The Congdon name is indelibly linked with the Glensheen Historic Estate in Duluth, Minnesota. Glensheen Historic Estate: Glensheen, the Historic Congdon Estate is a 27,000 square foot mansion in Duluth, Minnesota, United States, operated by the University of Minnesota Duluth as a historic house museum.
i don't know