United States. Department of the Treasury. "Southard Resigns from Treasury Post, August 21, 1962, Release Number d-583," in United States. Department of the Treasury. "Volume 133," Press Releases of the United States Department of the Treasury (July 2, 1962 - September 30, 1962) : 337-343. https://fraser.stlouisfed.org/title/6111/item/586976/toc/538901 , accessed on June 24, 2024.