a high-ranking officer of the Black Dragon Society by Kilsoo Haan, an anti-Japanese Korean patriot. This document was purported to detail Japanese war plans for the simultaneous invasion of the Panama Canal Zone, Alaska, California and Washington. Haan was said to have obtained the documents by clandestine means in a Los Angeles hotel room in 1940. The author, Kinoaki Matsuo is described as a Japanese intelligence officer and high official member in the ultranationalist Black Dragon secret society (Kokuryu-Kai or Amur River Society) and an active unit in Japanese Intelligence Service linked with Japanese Navy. Kilsoo Haan was a native of Japanese occupied Korea and sought the liberation of his homeland. Bibliography Books 松尾樹明『三國同盟と日米戰』霞ヶ關書房 1940.10 増補改訂版 (English: The Three-power Alliance and a United States-Japanese War) (Foreign Office Press, 1940) How Japan Plans to Win — An English translation of the Japanese book, The Three-Power Alliance and a United States-Japanese War, by Kilsoo K. Haan (Little, Brown & Co., 1942) Reviews by other authors Chamberlain, William Henry. “A Pep Talk for the Japanese.” Review of How Japan Plans to Win, by Kinoaki Matsuo. The New York Times, April 26, 1942, Section BR, p. 18. Woolbert, Robert Gale. Review of How Japan Plans to Win, by Kinoaki Matsuo. Foreign Affairs, Vol. 20, No. 4, July 1942, p. 785. Ainger, E. Review of How Japan Plans to Win, by Kinoaki Matsuo. International Affairs Review Supplement, Vol. 19, No. 9, September 1942, pp. 519–520. See also Black Dragon Society How Japan Plans to Win (1942) References External links CiNii Books 松尾樹明 Imperial Japanese Navy officers Matsuo Kinoaki Japanese people of World War II Year of birth missing Possibly living people