United States. Department of the Treasury. "Market Transactions, September 15, 1958," in United States. Department of the Treasury. "Volume 114," Press Releases of the United States Department of the Treasury (July 1, 1958 - September 30, 1958) : 210-212. https://fraser.stlouisfed.org/title/6111/item/586957/toc/537753 , accessed on June 25, 2024.