United States. Department of the Treasury. "Metropon Released to Qualified Drug Dealers, June 21, 1948," in United States. Department of the Treasury. "Volume 73," Press Releases of the United States Department of the Treasury (May 29, 1948 - August 9, 1948) : 128-130. https://fraser.stlouisfed.org/title/6111/item/586916/toc/564740 , accessed on April 19, 2024.