Stimson, Henry L.; Bundy, McGeorge (1948). On Active Service in Peace and War. New York, New York, USA: Harper & Brothers. p. 188. From p. 188: "Stimson, as Secretary of State, was dealing as a gentleman with the gentlemen sent as ambassadors and ministers from friendly nations, and he is reputed to have said, 'Gentlemen do not read each other's mail.' "
Barton J. Bernstein (1993). ""Seizing the Contested Terrain of Early Nuclear History: Stimson, Conant, and Their Allies Explain the Decision to Use the Atomic Bomb," Diplomatic History 17 (Winter 1993): 35–72". Diplomatic History. 17: 35–72. doi:10.1111/j.1467-7709.1993.tb00158.x.
Richard N. Current, "How Stimson Meant to 'Maneuver' the Japanese," Mississippi Valley Historical Review Vol. 40, No. 1 (Jun., 1953), pp. 67–74 in JSTOR
Robert P. Newman, "Hiroshima and the Trashing of Henry Stimson" The New England Quarterly, Vol. 71, No. 1 (Mar., 1998), pp. 5–32 in JSTOR
See Bonnett, John. "Jekyll and Hyde: Henry L. Stimson, Mentalite, and the Decision to Use the Atomic Bomb on Japan." War in History 1997 4(2): 174–212. ISSN0968-3445 Fulltext: Ebsco