United States. Bureau of Labor Statistics. "National Survey of Professional and Administrative, Technical, and Clerical Pay, Winter 1959-60 : Bulletin of the United States Bureau of Labor Statistics, No. 1286," National Survey of Professional, Administrative, Technical, and Clerical Pay (October 1960). https://fraser.stlouisfed.org/title/4570/item/495938, accessed on December 21, 2024.