Martial Arts Training Journal: Niten Ichi-Ryu: Chow, George: 9781723917349: Amazon.com: Books
KENJUTSU Hyoho Niten Ichi-ryu - 33th All Japan Kobudo Demonstration (2010) - YouTube
Book of the 5 Rings. Niten Ichi Ryu | SBG Sword Forum
Tetsujin ryū, an Offshoot of Niten Ichi ryū? – Light in the Clouds
Niten Ichi Ryu Bokken - Japanese Oak - Made in Japan 「二天一流」
Miyamoto Musashi Quotes
The Musashi Field Manual: The Sword Saint's Secrets for Winning the Tests of Life: Musashi, Miyamoto, Kane, Lawrence A., Wilder, Kris, Abernethy, Iain: 9780578913803: Amazon.com: Books