United States. Department of the Treasury. "Treasury's Weekly Bill Offering, February 5, 1991, Release Number nb-1118," in United States. Department of the Treasury. "Volume 304," Press Releases of the United States Department of the Treasury (January 2, 1991 - February 5, 1991) : 223-226. https://fraser.stlouisfed.org/title/6111/item/587147/toc/545565 , accessed on May 18, 2024.