United States. Department of the Treasury. "Treasury Announces June Financing, June 6, 1928," in United States. Department of the Treasury. "Volume 5," Press Releases of the United States Department of the Treasury (January 9, 1928 - December 20, 1928) : 127-131. https://fraser.stlouisfed.org/title/6111/item/586843/toc/557266 , accessed on March 28, 2024.