The Numismatic Bibliomania Society (NBS) is a non-profit educational organization founded in 1979 to support and promote the use and collecting of numismatic literature. Numismatic literature includes books, periodicals, catalogs and other written or printed material relating to coins, medals, tokens, or paper money, ancient or modern, U.S. or worldwide. Membership is open to any individual or organization interested in the study of numismatics and the study and collecting of numismatic literature.