United States. Department of the Treasury. "Treasury Weekly Bill Offering, December 15, 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) : 595-601. https://fraser.stlouisfed.org/title/6111/item/586971/toc/538664 , accessed on June 24, 2024.