Fred Silverman, who as a top executive at CBS, ABC and finally NBC was one of the most powerful people in the three-network era — died Jan. 30 at his home in the Pacific Palisades section of Los Angeles. He was 82.

Silverman was the force behind beloved series like “All in the Family,” “The Mary Tyler Moore Show, ”M*A*S*H,” “Laverne & Shirley,” and “Hill Street Blues.”