American Memory http://memory.loc.gov/ammem/mdbquery.html. View hundreds of mint-related photos and documents.
Congressional Biographical Dictionary. http://bioguide.congress.gov/biosearch/biosearch.asp
Cornucopia (Guide to United Kingdom museum, archives, and library collections). http://www.cornucopia.org.uk/
Library of Congress WWW/Z39.50 Gateway. http://lcweb.loc.gov/z3950/
MatWeb Metal and Alloy Composition Search. http://www.matweb.com/index.asp?ckck=1
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