United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "March 1969," Business Conditions Digest (March 1969) : 69-69. https://fraser.stlouisfed.org/title/43/item/7528/toc/62149 , accessed on March 29, 2024.
United States. Bureau of the Census. "Stock Prices," in United States. Bureau of the Census. "March 1969," Business Conditions Digest (March 1969) : 69-69. https://fraser.stlouisfed.org/title/43/item/7528/toc/62149 , accessed on March 29, 2024.