Hearings Before the NASA Authorization Subcommittee of the Committee on Aeronautical and Space Sciences, United States Senate, Eighty-sixth Congress, First Session, on S. 1582 and H. R. 7007, a Bill to Authorize Appropriations to the National Aeronautics and Space Administration for Salaries and Expenses, Research and Development, Construction and Equipment, and for Other Purposes. May 21, 1959