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Material Request Instructions
Image located in U.S. Geological library photographic collection, F.C. Calkins Collection album, Volume 3, no.420.
This USGS product is considered to be in the U.S. public domain. For further information on the USGS Information Policies and Instructions, refer to the Copyrights and Credits section on this web page: http://www.usgs.gov/laws/info_policies.html