Wikipedia as a Research Tool
Len Augsburger of the Newman Numismatic Portal writes:

Link to Wiki article on the 1853 Coinage Act:
https://en.wikipedia.org/wiki/Coinage_Act_of_1853

Link to 1852 Senate report on circulating coinage:
https://nnp.wustl.edu/library/book/517155

ANS Coin Database Images under a Creative Commons License
David Hill is the Francis D. Campbell Librarian of the American Numismatic Society. He writes:

Gary Greenbaum writes:

To search the ANS MANTIS database, see:
http://numismatics.org/search/

To search for "united states commemorative", see:
http://numismatics.org/search/results?q=fulltext%3Aunited+states+commemorative+AND+imagesavailable%3Atrue

To read the earlier E-Sylum article, see:
THE MAKING OF A WIKIPEDIA ARTICLE (http://www.coinbooks.org/v20/esylum_v20n33a13.html)