Results of Operations of Bureau of Internal Revenue During Fiscal Year Ended June 30, 1939, July 31, 1939
United States. Department of the Treasury. "Results of Operations of Bureau of Internal Revenue During Fiscal Year Ended June 30, 1939, July 31, 1939," in United States. Department of the Treasury. "Volume 28," Press Releases of the United States Department of the Treasury (June 20, 1939 - October 11, 1939) : 165-168. https://fraser.stlouisfed.org/title/6111/item/586870/toc/567728 , accessed on May 10, 2024.