Operation of the national and federal reserve banking systems : Hearings before the Committee on banking and currency, United States, Seventy-second Congress, first session, on S. 4115, a bill to provide for the safer and more effective use of the assets of federal reserve banks and of national banking asociations, to regulate interbank control, to prevent the undue diversion of funds into speculative operations, and for other purposes ... Printed for the use of the Committee on banking and currency.