United States. Department of the Treasury. "1 1/8% Certificates, February 18, 1948," in United States. Department of the Treasury. "Volume 71," Press Releases of the United States Department of the Treasury (January 2, 1948 - March 31, 1948) : 248-252. https://fraser.stlouisfed.org/title/6111/item/586914/toc/569772 , accessed on May 28, 2022.