Supplemental appropriation -- National Advisory Committee for Aeronautics. Communication from the President of the United States transmitting a proposed supplemental appropriation for the National Advisory Committee for Aeronautics, fiscal year 1953, amounting to $3,500,000, in the form of an amendment to the budget. May 5 (legislative day, May 1), 1952. -- Read ; referred to the Committee on Appropriations and ordered to be printed