United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "July 1964," Business Conditions Digest (July 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7205/toc/258074 , accessed on April 19, 2024.
United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "July 1964," Business Conditions Digest (July 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7205/toc/258074 , accessed on April 19, 2024.