United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1964," Business Conditions Digest (October 1964) : 1-1. https://fraser.stlouisfed.org/title/43/item/7208/toc/60086 , accessed on March 29, 2024.
United States. Bureau of the Census. "Cover Page," in United States. Bureau of the Census. "October 1964," Business Conditions Digest (October 1964) : 1-1. https://fraser.stlouisfed.org/title/43/item/7208/toc/60086 , accessed on March 29, 2024.