United States. Department of the Treasury. "Inspection of Gold at Fort Knox, September 20, 1974," in United States. Department of the Treasury. "Volume 192," Press Releases of the United States Department of the Treasury (September 1, 1974 - September 30, 1974) : 287-289. https://fraser.stlouisfed.org/title/6111/item/587035/toc/543955 , accessed on June 25, 2024.