In my research to get permission for using diagrams, I sometimes find sad news. I’ve just learned that Teruo Tsuji and Keiji Kitamura are dead. Keiji-San and I used to exchange letters & diagrams back in the 90s, he was an under-rated creator, perhaps best known for his cat and his book “Origami Treasure Chest”.

Tsuji, of course, came up with an superb “talking frog”.