United States. Bureau of Labor Statistics. "June 1966," The Employment Situation (July 11, 1966). https://fraser.stlouisfed.org/title/144/item/496913, accessed on September 24, 2023.
Public Domain
United States. Bureau of Labor Statistics. "June 1966," The Employment Situation (July 11, 1966). https://fraser.stlouisfed.org/title/144/item/496913, accessed on September 24, 2023.
Public Domain