Mr. Manning's film career did not take flight until the 1970s, when he was in his mid-50s. He had parts in the films "Where's Poppa?," "The Owl and the Pussycat," "Melinda," "The Thief Who Came to Dinner," "Herbie Rides Again," "The Great Waldo Pepper," "Gus," and "Frances." Television appearances ranged from "The Mary Tyler Moore Show" and "Bonanza" to "Silver Spoons" and "The Paper Chase," in which he had a recurring role as Dean Rutherford.