United States. Department of the Treasury. "Quota Commodities, June 13, 1963, Release Number d-879," in United States. Department of the Treasury. "Volume 137," Press Releases of the United States Department of the Treasury (June 4, 1963 - August 4, 1963) : 50-55. https://fraser.stlouisfed.org/title/6111/item/586980/toc/539174 , accessed on June 17, 2024.