Check out these covers and pages to some Superman manga series from the 50s.
Sources claim that the one of the Superman manga runs was done by Tatsuo Yoshida, who would later found Tatsunoko Studios with his brothers and helped create classic anime titles such as Speed Racer, Yattaman and Gatchaman aka Battle Of the Planets aka G-Force.
Had to use attachment because CBR won't upload pictures from computer or show the pictures when I use URL.