United States. Department of the Treasury. "Treasury's Weekly Bill Offering, June 15, 1993, Release Number lb-240," in United States. Department of the Treasury. "Volume 323," Press Releases of the United States Department of the Treasury (May 21, 1993 - July 7, 1993) : 226-228. https://fraser.stlouisfed.org/title/6111/item/587166/toc/547359 , accessed on May 18, 2024.