In the mid-60s, United Artists licensed the series for broadcast on American TV. The whole series was dubbed into English but never released. Reportedly, UA wasn't interested in showing a black and white program while the three networks were pushing for more color programs. An English-dubbed version of episode 3 was released on laserdisc in Japan, but the rest of the English dub remains unreleased in the US or Japan. Only a few other episodes have ended up in the hands of 16mm collectors.