U.S. Savings Bonds Issued And Redeemed Through January 31, 1969, February 7, 1969
United States. Department of the Treasury. "U.S. Savings Bonds Issued And Redeemed Through January 31, 1969, February 7, 1969," in United States. Department of the Treasury. "Volume 164," Press Releases of the United States Department of the Treasury (January 22, 1969 - April 30, 1969) : 22-23. https://fraser.stlouisfed.org/title/6111/item/587007/toc/541311 , accessed on June 19, 2024.