New Rules on charitable contributions, December 21, 1964, Release Number d-1445
United States. Department of the Treasury. "New Rules on charitable contributions, December 21, 1964, Release Number d-1445," in United States. Department of the Treasury. "Volume 146," Press Releases of the United States Department of the Treasury (December 1, 1964 - February 1, 1965) : 205-212. https://fraser.stlouisfed.org/title/6111/item/586989/toc/539611 , accessed on June 24, 2024.