Secretary Fowler's letter to Senator George A. Smathers and to members of the Senate Finance Committee on the restoration of the investment tax credit, March 21, 1967, Release Number f-857
United States. Department of the Treasury. "Secretary Fowler's letter to Senator George A. Smathers and to members of the Senate Finance Committee on the restoration of the investment tax credit, March 21, 1967, Release Number f-857," in United States. Department of the Treasury. "Volume 157," Press Releases of the United States Department of the Treasury (March 1, 1967 - May 31, 1967) : 237-241. https://fraser.stlouisfed.org/title/6111/item/587000/toc/540536 , accessed on June 2, 2024.