United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "December 1969," Business Conditions Digest (December 1969) : 70-70. https://fraser.stlouisfed.org/title/43/item/7537/toc/83568 , accessed on May 14, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "December 1969," Business Conditions Digest (December 1969) : 70-70. https://fraser.stlouisfed.org/title/43/item/7537/toc/83568 , accessed on May 14, 2024.