United States. Department of the Treasury. "Bill Tender, April 25, 1949," in United States. Department of the Treasury. "Volume 77," Press Releases of the United States Department of the Treasury (March 25, 1949 - May 31, 1949) : 261-263. https://fraser.stlouisfed.org/title/6111/item/586920/toc/565030 , accessed on April 18, 2024.