United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "June 1970," Business Conditions Digest (June 1970) : 106-106. https://fraser.stlouisfed.org/title/43/item/7543/toc/266743 , accessed on March 28, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "June 1970," Business Conditions Digest (June 1970) : 106-106. https://fraser.stlouisfed.org/title/43/item/7543/toc/266743 , accessed on March 28, 2024.