>From a previous posting, someone stated that the prison was at the intersection of Cooper and North streets. (I love this site !!! You can find just about anything in a city - cemeteries, schools, churches, airports, etc..) This link will take you to a map of Jackson, Jackson Co, MI. If you pan north, it shows you where the State Prison is now - http://www.topozone.com/map.asp?lat=42.24583&lon=-84.40139 This link will take you to a closer map of the intersection of Cooper and North. Could the shaded building to the left be the old prison / current armory? http://www.topozone.com/map.asp?z=16&n=4681571&e=714141&s=25 Cathy