Report of the president and directors.
|Corporate Author:||Pittsburgh and Boston Mining Company of Pittsburgh.|
Pittsburgh, W.S. Haven.
Pittsburgh and Boston Mining Company of Pittsburgh.
Industries > Industries / Michigan > Industries / Michigan / Upper Peninsula
Copper mines and mining > Copper mines and mining / Michigan > Copper mines and mining / Michigan / Upper Peninsula.
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|Full view1849-1854||University of Michigan|
|Full view1870||University of Michigan|