In Cincinnati, National League umpire Jocko Conlan criticizes batting helmets, saying, “In my opinion helmets are an inviting target for pitchers to throw at. Last season at least seven helmets were cracked in our league by bean ball pitches, intentional or not.”

On May 24, 1958 — In Cincinnati, National League umpire Jocko Conlan criticizes batting helmets, saying, “In my opinion helmets are an inviting target for pitchers to throw at. Last season at least seven helmets were cracked in our league by bean ball pitches, intentional or not.”

Source:
Baseball Reference May 24