Breen, Walter. Walter Breen’s Complete Encyclopedia of U.S. and Colonial Coins. Doubleday, 1988.
Bowers, Q. David. A Guide Book of United States Paper Money. Whitman Publishing, várias edições.
Bureau of Engraving and Printing. History of U.S. Paper Money. U.S. Department of the Treasury, disponível em: www.moneyfactory.gov.
Friedberg, Arthur L. Paper Money of the United States. Coin & Currency Institute, várias edições.
Gene Hessler. U.S. Essay, Proof and Specimen Notes. Krause Publications, 2006.
Official Red Book, A Guide Book of United States Coins, 2023 Edition.
Taxay, Don. The U.S. Mint and Coinage: An Illustrated History. Arco Publishing, 1970.