Jojutsu: Shinto Muso Ryu Jojutsu Zukai a book by Fujita Seiko, Joe Maurantonio, and Richard Maloof
Seiko Fujita 1898 – 1966, “The Last Of The Koga Ryu Ninja” - Warrener Entertainment
Hojutsu Yarikata Zukai (Illustrated Guidance of Budo Tricks) by Fujita Seiko | eBay
Aikido Sangenkai - "I am the 14th successor of the Wada Iga Spirit and that's how my house came to protect the traditions of Kōoga." - an interesting look at Fujita Seiko,
On Assymetry” By Fujita Seiko
Striking weapons of the Human Body - Part 1. from Fujita Seiko (藤田 西湖) - Ryōi Shintōkai 良移心当会