United States. Bureau of Labor Statistics and Brackett, Jean C. "Three Budgets for a Retired Couple in Urban Areas of the United States, 1969-70, Supplement" in Three Budgets for a Retired Couple in Urban Areas of the United States, 1967-68 : Bulletin of the United States Bureau of Labor Statistics, No. 1570-6 (1971). https://fraser.stlouisfed.org/title/4860/item/499665, accessed on January 13, 2025.