The three masters of Budo: Jigoro Kano - judo, Morei Ueshiba - aokidô, Gichin Funakoshi - Karate (Paperback)
Very good book, well written, only negative: the author practice Aikido, and he is not impartial when presenting the biography of Ueshiba, he tries to present Ueshiba as "superior" to the other two, which regardless of historical truth is a seri
