United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "December 1971," Business Conditions Digest (December 1971) : 100-100. https://fraser.stlouisfed.org/title/43/item/7561/toc/77225 , accessed on May 4, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "December 1971," Business Conditions Digest (December 1971) : 100-100. https://fraser.stlouisfed.org/title/43/item/7561/toc/77225 , accessed on May 4, 2024.