Purchase of Treasury securities and interest on savings deposits : hearing before the Subcommittee on Financial Institutions of the Committee on Banking and Currency, United States Senate, Ninetieth Congress, second session on S. 2923 and S. 3133, to amend section 14(b) of the Federal Reserve Act, as amended, to extend for 2 years the authority of federal reserve banks to purchase U.S. obligations directly from the treasury, and to extend for 2 years the authority for more flexible regulation of maximum rates of interest or dividends, higher reserve requirements, and open market operations in agency issues, April 3, 1968.