United States. Department of the Treasury. "Results of Treasury cash offering of 5-3/8% notes, August 24, 1967," in United States. Department of the Treasury. "Volume 158," Press Releases of the United States Department of the Treasury (June 1, 1967 - August 29, 1967) : 574-575. https://fraser.stlouisfed.org/title/6111/item/587001/toc/540799 , accessed on May 19, 2024.