(en) Don Taxay, Scott's Comprehensive Catalogue and Encyclopedia of U.S. Coins 1971, Scott Publishing Co., , 397 p. (lire en ligne)
archive.org
(en) Pete Smith, American Numismatic Biographies, (lire en ligne), p. 151
books.google.com
(en) Don Taxay, Counterfeit, Mis-struck, and Unofficial U.S. Coins: A Guide for the Detection of Cast and Struck Counterfeits, Electrotypes, and Altered Coins, Arco Publishing Company, (lire en ligne)
(en) Don Taxay, The U.S. Mint and Coinage, (lire en ligne)
(en) Don Taxay, Money of the American Indians and Other Primitive Currencies of the Americas, Arco Publishing Company, (lire en ligne)
