United States. Bureau of Labor Statistics. "National Survey of Professional, Administrative, Technical, and Clerical Pay, February-March 1966 : Bulletin of the United States Bureau of Labor Statistics, No. 1535,"
National Survey of Professional, Administrative, Technical, and Clerical Pay
(1966).
https://fraser.stlouisfed.org/title/4570/item/498286, accessed on March 10, 2025.
@FedFRASER