United States. Bureau of the Census. "June 1976," Business Conditions Digest (June 1976). https://fraser.stlouisfed.org/title/43/item/7358, accessed on April 23, 2024.
United States. Bureau of the Census. "June 1976," Business Conditions Digest (June 1976). https://fraser.stlouisfed.org/title/43/item/7358, accessed on April 23, 2024.