An edition of A true description of the Lake Superior country ... with Bayfield's chart ... also a minute account of the copper mines and working companies ... and containing a concise mode of assaying, treating, smelting, and refining copper ores (1988)

A true description of the Lake Superior country ... with Bayfield's chart ... also a minute account of the copper mines and working companies ... and containing a concise mode of assaying, treating, smelting, and refining copper ores

By St. John, John R.