United States. Bureau of Labor Statistics. Division of Occupational Outlook. "Earnings and Supplementary Benefits in Hospitals, Philadelphia, Pennsylvania, July 1956 : Bulletin of the United States Bureau of Labor Statistics, No. 1210-10," Industry Wage Survey: Hospitals (August 1957). https://fraser.stlouisfed.org/title/4567/item/495697, accessed on September 20, 2024.