Circular on Ancient Copper Mining
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Form/Genre: Circular
Date: April 25, 1862
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In anticipation of a publication on the ancient copper mining operations of the Lake Superior Copper region, Secretary Joseph Henry sends out a circular requesting specimens and any original observations of the region. Specimens will be photographed and returned, if requested.
Henry, Joseph 1797-1878
Chronology of Smithsonian History
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu
April 25, 1862
Circular