United States. Department of the Treasury. "Austrian Bond Payment, February 21, 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) : 60-62. https://fraser.stlouisfed.org/title/6111/item/586843/toc/557247 , accessed on April 19, 2024.