Sisters Mary Ida Mann Cady and Jessie Ellen Mann grew up in Concord, Michigan, at the turn of the 20th Century, spending most of their lives in the big yellow house on Hanover Street. In 1970, the sisters gave their home and its contents to the State of Michigan to serve as a museum – Mann House. In commemoration of the Mann sisters, the Michigan History Center, Michigan Department of Natural Resources, holds a conference dedicated to examining the role…