United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "May 1980," Business Conditions Digest (May 1980) : 102-102. https://fraser.stlouisfed.org/title/43/item/7405/toc/250532 , accessed on June 24, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "May 1980," Business Conditions Digest (May 1980) : 102-102. https://fraser.stlouisfed.org/title/43/item/7405/toc/250532 , accessed on June 24, 2024.