This paper offers a model of intermediation in the Diamond-Dybvig tradition in which both fiat currency and bank deposits are present. The behavior of the economy's price level, deposit-currency ratio, and money supply is compared across equilibria in which bank runs do and do not occur. It is shown that the behavior of these variables in the presence and absence of runs is consistent with that observed in the United States during the period from 1929 to 1933.