Statement by Secretary Humphrey before the House Committee on Post Office and Civil Service, June 24, 1957
Humphrey, George M. (George Magoffin), 1890-1970. "Statement by Secretary Humphrey before the House Committee on Post Office and Civil Service, June 24, 1957," in United States. Department of the Treasury. "Volume 110," Press Releases of the United States Department of the Treasury (May 2, 1957 - July 26, 1957) : 151-154. https://fraser.stlouisfed.org/title/6111/item/586953/toc/537404 , accessed on June 25, 2024.