Circular on Ancient Copper Mining



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


  • Photograph of exhibit of collection of materials from ancient cooper mining operations of the Lake Superior copper region, U.S. National Museum, 1962. Smithsonian Institution Archives, negative number mnh1007.
  • Smithsonian Institution Archives, Record Unit 65, Box 1, 495.

Contact information

Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520,


April 25, 1862


  • Citizen science
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  • Minerals--Collection and preservation



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