Subscription figures on current refunding, February 14, 1968, Release Number f-1165
United States. Department of the Treasury. "Subscription figures on current refunding, February 14, 1968, Release Number f-1165," in United States. Department of the Treasury. "Volume 160," Press Releases of the United States Department of the Treasury (December 1, 1967 - February 29, 1968) : 733-734. https://fraser.stlouisfed.org/title/6111/item/587003/toc/540969 , accessed on July 9, 2024.