go.jp/article/budo1968/33/2/33_16/_pdf [bare URL PDF] "史上２人目、２年連続「最強の剣士」 剣道・高鍋進（上）". nikkei.com. Archived at Ghostarchive and the Wayback Machine: Masashi...

he was inducted into the All Japan Kendo Federation's Kendo Hall of Fame (剣道殿堂). Hiiragi, Takefumi. "Famous Swordsmen of Japan (1): Kenkichi Sakakibara"...