Letter from the Secretary of the Treasury to the Chairman of the Committee on Ways and Means, July 9, 1919
United States. Department of the Treasury. "Letter from the Secretary of the Treasury to the Chairman of the Committee on Ways and Means, July 9, 1919," in United States. Department of the Treasury. "Volume 1A," Press Releases of the United States Department of the Treasury (March 30, 1918 - December 26, 1921) : 50-54. https://fraser.stlouisfed.org/title/6111/item/586836/toc/557980 , accessed on September 22, 2023.