United States. Department of the Treasury. "Statistics of Income for 1939 (Part 2), February 4, 1942," in United States. Department of the Treasury. "Volume 39," Press Releases of the United States Department of the Treasury (December 12, 1941 - January 27, 1942) : 449-459. https://fraser.stlouisfed.org/title/6111/item/586882/toc/566369 , accessed on April 25, 2024.