What is another name for the league Art Passarella umpired?
Art Passarella: Arthur Matthew Passarella (December 23, 1909 – October 12, 1981) was an American major league baseball umpire and actor. Art Passarella:  He worked in the American League from 1941 to 1942, and again from 1945 to 1953. American League: The American League of Professional Baseball Clubs, or simply the American League (AL), is one of two leagues that make up Major League Baseball (MLB) in the United States and Canada. American League:  It is sometimes called the Junior Circuit because it claimed Major League status for the 1901 season, 25 years after the formation of the National League (the "Senior Circuit").
Junior Circuit