United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "August 1971," Business Conditions Digest (August 1971) : 70-70. https://fraser.stlouisfed.org/title/43/item/7557/toc/384927 , accessed on March 28, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "August 1971," Business Conditions Digest (August 1971) : 70-70. https://fraser.stlouisfed.org/title/43/item/7557/toc/384927 , accessed on March 28, 2024.