Historical Marker
May House
Historical marker location:
450 Madison Ave, Grand Rapids, Michigan
( Marker is on Madison Avenue SE near Logan Street SE, on the right when traveling north.)
Marker installed: 1987
The Upper Peninsula of Michigan was once a major center for copper mining. The Keweenaw Peninsula was home to the largest concentration of copper mines in the world in the mid-19th century, and copper was an important natural resource for the state's economy.