United States. Bureau of the Census. "Table of Contents," in United States. Bureau of the Census. "June 1963," Business Conditions Digest (June 1963) : 5-6. https://fraser.stlouisfed.org/title/43/item/7192/toc/425240 , accessed on March 29, 2024.
United States. Bureau of the Census. "Table of Contents," in United States. Bureau of the Census. "June 1963," Business Conditions Digest (June 1963) : 5-6. https://fraser.stlouisfed.org/title/43/item/7192/toc/425240 , accessed on March 29, 2024.