Batting helmet - Wikipedia

Who was the last player to play in Major League Baseball without wearing a batting helmet? When did that happen and why was it allowed? - Quora

When did players start wearing batting helmets while hitting (baseball)? - Quora

Pittsburgh Pirates, 1978 - Dave Parker with a football face-mask attached to his batting helmet to protect his j…

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Why do MLB players wear helmets with only one ear flap? - Quora

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Who invented baseball helmets? - Quora

South Bend Cubs Batting Helmet Bounce

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Batting helmet - Wikipedia

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