Free movement of certain property and information : hearings before the Committee on Ways and Means, House of Representatives, Seventy-seventh Congress, second session, on H.R. 7832, a bill to facilitate, to the extent required for the effective prosecution of the war, the free movement of property and information into and out of, and of persons out of, the United States. Revised. December 3,4,7,8, and 9, 1942