United States. Department of the Treasury. "Treasury's Weekly Bill Offering, July 9, 1991, Release Number nb-1360," in United States. Department of the Treasury. "Volume 308," Press Releases of the United States Department of the Treasury (June 3, 1991 - July 19, 1991) : 393-396. https://fraser.stlouisfed.org/title/6111/item/587151/toc/545991 , accessed on May 18, 2024.