Calumet, Mich. Underground in the Tamarack Mine


Calumet, Mich. Underground in the Tamarack Mine.
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“My Dear Friend,—
I am somewhat dissappointed in not being able to make this collection quite as comprehensive as I hoped, but will not hesitate to say that I believe it to be a very good one. Some of these specimens I have saved and prized highly for year, but decided they would be doing more good with you. I had hoped to send you samples of the many grades of copper after it has been stamped and treated at the mills, and I did make a trip to the mills but at”