Pittsburg Ely Copper Company.
Pittsburg Ely Copper Company : organized under the territorial laws of Arizona ...
[Denver? : Pittsburg Ely Copper Company, 1906]
BEIN Zc69 906pi: Original wrappers.
Pittsburg Ely Copper Company.
Copper mines and mining -- Nevada -- Ely.
Philadelphia Area Center for History of Science
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