United States. Department of the Treasury. "Treasury's Weekly Bill Offering, December 13, 1961," in United States. Department of the Treasury. "Volume 128," Press Releases of the United States Department of the Treasury (October 2, 1961 - December 30, 1961) : 566-570. https://fraser.stlouisfed.org/title/6111/item/586971/toc/538657 , accessed on June 24, 2024.