Prosperity Decade: From War to Depression, 1917–1929. By George Soule. [Volume VIII, The Economic History of the United States.] New York and Toronto: Rinehart and Company, 1947. Pp. xiv, 365. $4.00. - Depression Decade: From New Era Through New Deal, 1929–1941. By Broadus Mitchell. [Volume IX, The Economic History of the United States.] New York: Rinehart and Company, 1947. Pp. xviii, 462. $4.00.