United States. Department of the Treasury. "Market Transactions, December 16, 1957," in United States. Department of the Treasury. "Volume 111," Press Releases of the United States Department of the Treasury (July 30, 1957 - December 30, 1957) : 401-406. https://fraser.stlouisfed.org/title/6111/item/586954/toc/537539 , accessed on June 25, 2024.