Umpiring
In parts of three seasons, Henderson was used as a major league umpire. First, on June 16, 1889, he umpired an American Association game. Later, in 1895, he umpired 11 National League games. The next season, he umpired 51 NL games, the final of which was on September 12, 1896.
Read more about this topic: Hardie Henderson