United States. Bureau of Labor Statistics. "Industry Wage Survey: Nursing Homes and Related Facilities, October 1967 and April 1968 : Bulletin of the United States Bureau of Labor Statistics, No. 1638," Industry Wage Survey: Nursing and Personal Care Facilities (1969). https://fraser.stlouisfed.org/title/4621/item/498543, accessed on February 6, 2025.