altho I saw him in an O'Neill play Swift was best known as a voice actor. he gave voice to everyone from Eisenhower to Popeye -- even Santa Claus.
but he had a special moment in tv history. he was the voice of Mr. Bluster & other characters on "The Howdy Doody Show." & for abt a year he actually was Howdy's voice.
Swift's son is actor Lewis J. Stadlen.
here's a famous cartoon for which Swift did all the voices: