United States. Department of the Treasury. "1 1/8% Certificates, May 19, 1948," in United States. Department of the Treasury. "Volume 72," Press Releases of the United States Department of the Treasury (April 2, 1948 - May 27, 1948) : 444-449. https://fraser.stlouisfed.org/title/6111/item/586915/toc/569871 , accessed on June 5, 2023.