United States. Department of the Treasury. "Secret Service Year-End Report, February 15, 1953," in United States. Department of the Treasury. "Volume 96," Press Releases of the United States Department of the Treasury (January 22, 1953 - April 30, 1953) : 109-115. https://fraser.stlouisfed.org/title/6111/item/586939/toc/563529 , accessed on May 8, 2024.