Trivia

One of his best-known screenwriting credits was for "Brannigan", starring John Wayne, one of Hollywood's most right-wing actors, who had been among the arch-enemies of his father, Dalton Trumbo, a sometime communist, and had even once said that he was proud of having helped get Trumbo blacklisted.

Son of Dalton Trumbo.

He was an authority on the Red Scare black-listings of the 1950s. He was 7 when his father, Dalton Trumbo, was subpoenaed by the US House Un-American Activities Committee.