United States. Bureau of Labor Statistics. "National Compensation Survey: Washington-Baltimore, DC-MD-VA-WV, April 2001 : Bulletin of the United States Bureau of Labor Statistics, No. 3110-39," National Compensation Survey (Wages and Salaries) (December 2001). https://fraser.stlouisfed.org/title/6009/item/582561, accessed on September 19, 2024.