Available to order online direct from Lulu, 'Karate Wadōryu:
from Japan to the West', describes
the history of the JKF
Wadōkai as well as the early days of the Japanese karate world from the 1920's to the present day. See further details here.
Katsube sensei (left) and Shimura sensei teaching kihon gumite at Didsbury karate club, Manchester.