United States. Department of the Treasury. "Federal-State Tax Study, August 4, 1947," in United States. Department of the Treasury. "Volume 67," Press Releases of the United States Department of the Treasury (June 5, 1947 - August 4, 1947) : 238-305. https://fraser.stlouisfed.org/title/6111/item/586910/toc/562378 , accessed on June 25, 2024.