“The Shock of the Atomic Bomb and Japan’s Decision to Surrender – A Reconsideration,” in the Pacific Historical Review, vol. 67, no. 4, 1998, by Sadao Asada.
Letters to the Editor in the Journal of Strategic Studies, vol. 29, no. 3, 2006, by Sadao Asada and Tsuyoshi Hasegawa, available online at http://hnn.us/article/28318
War without Mercy: Race and Power in the Pacific War, by John W. Dower.
Cultures of War, by John W. Dower.
Downfall: The End of the Imperial Japanese Empire, by Richard B. Frank.
Racing the Enemy: Stalin, Truman, and the Surrender of Japan, by Tsuyoshi Hasegawa.
“The Decision to Risk the Future,” in Japan Focus, 2007, by Pete Kuznick, available online at http://hnn.us/article/41354
The 1946 U.S. Strategic Bombing Survey in the Pacific, available online at http://anesi.com/ussbs01.htm
A collection of primary sources from Japan and the U.S., available online at http://www2.gwu.edu/~nsarchiv/NSAEBB/NSAEBB162/
The map of the fire-bombing was made by Matt V., an historian and pretty cool guy who writes about Korean and East Asian history at http://populargusts.blogspot.kr/