sentences:  Al Helfer
  
  George Alvin "Al" Helfer (September 26, 1911 – May 16, 1975) was an American radio sportscaster.Nicknamed "Mr. Radio Baseball", Helfer called the play-by-play of seven World Series, ten All-Star Games, and regular season broadcasts for several teams (among them the New York Yankees, Brooklyn Dodgers and Oakland Athletics) and the Mutual network.