Longhaired star of 1950s TV (6)

I believe the answer is:

lassie

(Other definitions for lassie that I've seen before include "''Will ye go ..., go'' (folksong)" , "Cinema dog who went home" , "Screen canine" , "TV series collie dog" , "Collie featuring in many films" .)

I've seen this clue in The New York Times.

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