United States. Department of the Treasury. "Year-end Statement for 1964, July 21, 1964, Release Number d-1288," in United States. Department of the Treasury. "Volume 143," Press Releases of the United States Department of the Treasury (June 1, 1964 - July 31, 1964) : 311-337. https://fraser.stlouisfed.org/title/6111/item/586986/toc/539455 , accessed on June 24, 2024.