NASA Authorization for Fiscal Year 1962: Hearings Before the Committee on Aeronautical and Space Sciences, United States Senate, Eighty-seventh Congress, First Session, on H.R. 6874, an Act to Authorize Appropriations to the National Aeronautics and Space Administration for Salaries and Expenses, Research and Development, Construction of Facilities, and for Other Purposes, June 7, 8 and 12, 1961