United States. Department of the Treasury. "Statistics Of Income, October 8, 1947," in United States. Department of the Treasury. "Volume 69," Press Releases of the United States Department of the Treasury (October 3, 1947 - November 14, 1947) : 7-37. https://fraser.stlouisfed.org/title/6111/item/586912/toc/562406 , accessed on December 10, 2023.