This primary source comes from the Records of the National Aeronautics and Space Administration.
Full Citation: 'Personnel Grows by 500; Payroll Hits 52 million' Marshall Star, Volume 2, Number 14; 1/3/1962; Marshall Star, Volume 2, 1960 - 2006; Marshall Star, 1960 - 2006; Records of the National Aeronautics and Space Administration, Record Group 255; National Archives at Atlanta, Morrow, GA. [Online Version, https://www.docsteach.org/documents/document/personnel-grows-500-payroll-hits-52-million, May 4, 2024]