United States. Department of the Treasury. "Net Market Transactions, April 15, 1958," in United States. Department of the Treasury. "Volume 113," Press Releases of the United States Department of the Treasury (April 1, 1958 - June 26, 1958) : 94-98. https://fraser.stlouisfed.org/title/6111/item/586956/toc/537648 , accessed on June 25, 2024.