United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "May 1964," Business Conditions Digest (May 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7203/toc/55431 , accessed on April 19, 2024.
United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "May 1964," Business Conditions Digest (May 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7203/toc/55431 , accessed on April 19, 2024.