United States. Department of the Treasury. "U.S. Gold transactions (4th quarter), March 8, 1966, Release Number f-397," in United States. Department of the Treasury. "Volume 153," Press Releases of the United States Department of the Treasury (February 1, 1966 - March 30, 1966) : 537-540. https://fraser.stlouisfed.org/title/6111/item/586996/toc/539975 , accessed on June 24, 2024.