A true description of the Lake Superior country [microform] : its rivers, coasts, bays, harbours, islands, and commerce : with Bayfield's chart [showing the boundary line as established by Joint Commission] : also a minute account of the copper mines and working companies : accompanied by a map of the mineral regions : showing, by their no. and place, all the different locations : and containing a concise mode of assaying, treating smelting, and refining copper ores / by John R. St. John

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