United States. Department of the Treasury. "Bill Tender, April 24, 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) : 293-296. https://fraser.stlouisfed.org/title/6111/item/586849/toc/560338 , accessed on May 9, 2024.