Calumet Visitor Center Project - Union Building Background Information
Historic Use of the Interior Space of the Union Building, Special Report prepared by Stephanie K. Atwood. (Adobe pdf - 1.26 MB)
Did You Know?
Early native peoples began the first metal mining in North America over 7,000 years ago with copper mining on Michigan's Keweenaw Peninsula. Copper was fashioned into tools and items that were traded throughout North America.