New income tax regulations relating to deductibility of business expenses, including expenses incurred for education made public by Treasury, April 4, 1958
United States. Department of the Treasury. "New income tax regulations relating to deductibility of business expenses, including expenses incurred for education made public by Treasury, April 4, 1958," in United States. Department of the Treasury. "Volume 113," Press Releases of the United States Department of the Treasury (April 1, 1958 - June 26, 1958) : 40-47. https://fraser.stlouisfed.org/title/6111/item/586956/toc/537635 , accessed on June 25, 2024.