United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "January 1987," Business Conditions Digest (January 1987) : 102-102. https://fraser.stlouisfed.org/title/43/item/7485/toc/413537 , accessed on May 8, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "January 1987," Business Conditions Digest (January 1987) : 102-102. https://fraser.stlouisfed.org/title/43/item/7485/toc/413537 , accessed on May 8, 2024.