Treasury Made Public Preliminary Report of Income Tax Collections for Month of March, April 4, 1934
United States. Department of the Treasury. "Treasury Made Public Preliminary Report of Income Tax Collections for Month of March, April 4, 1934," in United States. Department of the Treasury. "Volume 11," Press Releases of the United States Department of the Treasury (December 13, 1933 - June 16, 1934) : 248-250. https://fraser.stlouisfed.org/title/6111/item/586849/toc/560329 , accessed on April 21, 2021.