TV Comic the period between 1971 and 1973, when the strip was instead published in another Polystyle title, "Countdown/TV Action"). It also featured strip cartoons for the early puppet TV series produced by Gerry Anderson and AP Films—"Four Feather Falls", "Supercar" and "Fireball XL5"—until Anderson's titles became the focus of a rival publication, "TV Century 21". The 1960s issues are also noted as being the most collectable period in the comic's history. As well as "Doctor Who" and Anderson strips, other highly collectable material included "Telegoons" (which ran from 1963 to 1967), "Space Patrol" (from 1964 to 1965) and "The Avengers" (based
Sylvia Anderson in 1968, Turner commented: "we wanted a glamorous blonde and [Anderson] was the obvious choice." In 1966 and 1968, Anderson produced two feature-length films based on the "Thunderbirds" story, "Thunderbirds Are Go" and "Thunderbird 6". She was co-creator with Gerry Anderson for the series "UFO" (1969-1970) on which she co-produced, was responsible for fashions on the show, and did the majority of the casting. The Andersons' creative partnership ended when their marriage broke down during the production of the of "" in 1975. Gerry announced his intention to separate on the evening of the wrap party, following which Sylvia ceased