United States. Department of the Treasury. "Letter from Secretary Mellon to James Witherow, July 15, 1926," in United States. Department of the Treasury. "Volume 4A," Press Releases of the United States Department of the Treasury (January 4, 1926 - December 10, 1927) : 102-105. https://fraser.stlouisfed.org/title/6111/item/586842/toc/558077 , accessed on April 24, 2024.