United States. Department of the Treasury. "Treasury Weekly Bill Announcement, December 23, 1977, Release Number b-606," in United States. Department of the Treasury. "Volume 209," Press Releases of the United States Department of the Treasury (November 14, 1977 - January 18, 1978) : 314-317. https://fraser.stlouisfed.org/title/6111/item/587052/toc/529705 , accessed on May 20, 2024.