United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "July 1987," Business Conditions Digest (July 1987) : 102-102. https://fraser.stlouisfed.org/title/43/item/7491/toc/293429 , accessed on April 23, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "July 1987," Business Conditions Digest (July 1987) : 102-102. https://fraser.stlouisfed.org/title/43/item/7491/toc/293429 , accessed on April 23, 2024.