What do whale teeth, rice, seashells, feathers, cocoa, beans, fur, salt, and tobacco have in common? They were all used as currency at some point in history. Written for general readers, the Encyclopedia of Money avoids technical jargon, complicated mathematics, and statistical analysis to make the text accessible for all readers. The Encyclopedia of Money tells the international story of currency from early barter commodities to the widely used credit cards of today. More than 300 entries, arranged in alphabetical order, describe the major innovations, experiments, triumphs, and disasters in the development of a viable medium of exchange from ancient Persia to the present.