Secretary Humphrey's Letter to Chief Baughman of the Secret Service, January 7, 1954
United States. Department of the Treasury. "Secretary Humphrey's Letter to Chief Baughman of the Secret Service, January 7, 1954," in United States. Department of the Treasury. "Volume 99," Press Releases of the United States Department of the Treasury (January 5, 1954 - April 30, 1954) : 12-13. https://fraser.stlouisfed.org/title/6111/item/586942/toc/563394 , accessed on April 30, 2024.