United States. Department of the Treasury. "U.S. Foreign Gold Transactions For 2nd Quarter of 1961, September 18, 1961," in United States. Department of the Treasury. "Volume 127," Press Releases of the United States Department of the Treasury (August 1, 1961 - September 28, 1961) : 345-350. https://fraser.stlouisfed.org/title/6111/item/586970/toc/538576 , accessed on June 24, 2024.