George Alvin Helfer Jr.
Al Helfer was the voice of the baseball "Game of the Day" broadcast on the Mutual Radio Network from 1950 to 1954. Those games were carried throughout the United States in towns too small to provide their own baseball broadcasts.
- David Adler: "Helfer, 'Mr. Radio Baseball,' Frick Award winner: Called games for 8 teams, plus 'Mutual Game of the Day' in 1950s", mlb.com, December 12, 2018.