United States. Department of the Treasury. "Record for One-day Sales of Savings Bonds Set, January 17, 1938," in United States. Department of the Treasury. "Volume 22," Press Releases of the United States Department of the Treasury (December 15, 1937 - April 15, 1938) : 160-180. https://fraser.stlouisfed.org/title/6111/item/586863/toc/567112 , accessed on April 18, 2024.