Fūun ikan (Ōkuma Kō Hachijugonenshi Hensankai, 1926)
[Ein grandioser Blick in eine sturmbewegte Zeit, jap.] - Slg. von Briefen an den Marquis Okuma Shigenobu aus d. Jahren 1868-1922 in Facs. u. Druck. - Photoreproduction of letters addressed to S. Ōkuma in the collection of Ōkuma family. - Supplement to 3 v. set published as : Ōkuma Kō Hachijugonenshi