United States. Department of the Treasury. "Privilege of Tendering Third Liberty Loan Bonds Expired May 15, May 16, 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) : 121-122. https://fraser.stlouisfed.org/title/6111/item/586843/toc/557263 , accessed on April 19, 2024.