[1] Peacock was also a well known sportsman, particularly as a trap shooter; he won several national championships in this sport.
[3] Peacock was one of the founding members of the Lincoln Park Gun Club in Chicago.
[4] In 1931, he appeared in a live debate on WGN radio with the Chicago Tribune's outdoor editor, Bob Becker, covering perceived decreases in local waterfowl populations.
[6] He believed that the estimated 7 million trapshooters, hunters, and gun club members could help provide a third line of national defense.
Peacock was also a previous Illinois Racing Commissioner and a member of the South Shore Country Club.