United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "December 1964," Business Conditions Digest (December 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7210/toc/375297 , accessed on May 4, 2024.
United States. Bureau of the Census. "Contents," in United States. Bureau of the Census. "December 1964," Business Conditions Digest (December 1964) : 5-6. https://fraser.stlouisfed.org/title/43/item/7210/toc/375297 , accessed on May 4, 2024.