Supplemental Regulations Governing Sales of Silver to the Director of the Mint Under the Pittman Act, May 14, 1921
United States. Department of the Treasury. "Supplemental Regulations Governing Sales of Silver to the Director of the Mint Under the Pittman Act, May 14, 1921," in United States. Department of the Treasury. "Volume 1A," Press Releases of the United States Department of the Treasury (March 30, 1918 - December 26, 1921) : 343-347. https://fraser.stlouisfed.org/title/6111/item/586836/toc/558036 , accessed on September 22, 2023.