United States. Department of the Treasury. "Demand for Coins has Exhausted Supplies, June 12, 1934," in United States. Department of the Treasury. "Volume 11," Press Releases of the United States Department of the Treasury (December 13, 1933 - June 16, 1934) : 402-406. https://fraser.stlouisfed.org/title/6111/item/586849/toc/560365 , accessed on April 21, 2021.