United States. Department of the Treasury. "Bill Tender, April 12, 1955," in United States. Department of the Treasury. "Volume 103," Press Releases of the United States Department of the Treasury (April 5, 1955 - July 28, 1955) : 29-31. https://fraser.stlouisfed.org/title/6111/item/586946/toc/536867 , accessed on April 19, 2024.