The Cliff; America's First Great Copper Mine Donald Chaput Published: 1971 Total Pages: 128 Get eBook
The Cliff Mine and Its Methods of Operations Carl R. Redner Published: 1985 Total Pages: 62 Get eBook
The Cliff - America's First Great Copper Mine Donald Chaput Published: 2015-07-01 Total Pages: Get eBook
Cliff Mine at Clifton, Keweenaw County, Lake Superior, Michigan Cornelius Simonson Egbert Published: 1879 Total Pages: Get eBook