United States. Department of the Treasury. "Curtailment Of Production Of Pennies To Save Copper, October 13, 1942," in United States. Department of the Treasury. "Volume 43," Press Releases of the United States Department of the Treasury (August 31, 1942 - November 9, 1942) : 518-522. https://fraser.stlouisfed.org/title/6111/item/586886/toc/561345 , accessed on June 25, 2024.