United States. Department of the Treasury. "FOR IMMEDIATE RELEASE: Dartboards and dartgames from England, July 26, 1967," in United States. Department of the Treasury. "Volume 158," Press Releases of the United States Department of the Treasury (June 1, 1967 - August 29, 1967) : 391-392. https://fraser.stlouisfed.org/title/6111/item/587001/toc/540774 , accessed on May 18, 2024.