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Burdette, Roger (Spring 2013). “Benjamin Franklin Peale – Inventions and Innovations for the United States Mint, 1835 to 1852”. Journal of Numismatic Research (Great Falls, VA: Seneca Mill Press LLC) 1 (2): 9–133.
Burdette, Roger (2013). From Mine to Mint. Great Falls, VA: Seneca Mill Press LLC. ISBN 978-0-9768986-7-2
Bureau of the Mint (1904). Laws of the United States Relating to the Coinage. Washington, D.C.: United States Government Printing Office. https://books.google.co.jp/books?id=rmtAAAAAYAAJ&redir_esc=y&hl=ja
Clark, Cathy L. (March 2000). “Steam Power: A Pressing Issue”. The Numismatist (Colorado Springs, CO: American Numismatic Association): 287–291.
Doty, Richard G. (4–5 November 1989).
The Numismatist (Colorado Springs, CO: American Numismatic Association).
Smith, Pete (2010年). “American Numismatic Biographies”. The Numismatic Bibliomania Society. 2014年9月7日時点のオリジナルよりアーカイブ。2014年1月1日閲覧。
Snow, Richard (2009). A Guide Book of Flying Eagle and Indian Head Cents. Atlanta. GA: Whitman Publishing. ISBN 978-0-7948-2831-8
Taxay, Don (1983). The U.S. Mint and Coinage (reprint of 1966 ed.). New York: Sanford J. Durst Numismatic Publications. ISBN 978-0-915262-68-7
United States Senate (1887). Journal of the Executive Proceedings of the Senate of the United States. IV. Washington, D.C.: United States Government Printing Office. https://books.google.co.jp/books?id=HGAUAAAAYAAJ&redir_esc=y&hl=ja
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