National Baseball Hall of Fame and Museum ⚾ on X: #OTD: 1972: #Athletics hold baseball's first-ever Mustache Day for a Father's Day game at the Oakland Coliseum. / X

SABR Digital Library: Mustaches and Mayhem: 1972-74 Oakland A's – Society for American Baseball Research

Details Player Bio Reviews This image features six Brooklyn Dodgers in the dugout of Doubleday Field in Cooperstown, NY during the Baseball Hall of

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1972: Athletics hold baseball's first-ever Mustache Day at the Oakland Coliseum. Owner Charlie …

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Babe Ruth and Ted Williams Photograph by Old Image Factory

Babe Ruth and Ted Williams by Old Image Factory

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World's Best Baseball Dad Mug Father's Day Mug

Stan Musial Rounds the Bases After Home Run in Old-Timers Game 7/9/1972

National Baseball Hall of Fame and Museum ⚾ on Twitter: Rollie Fingers' distinct mustache always ensured he stood out from other relievers, but #OTD in 1982 he stood alone in the record

Best Baseball Dad Ever US American Flag Father's Day Throw Pillow, 16x16, Multicolor : Home & Kitchen

Mike Mussina Joins a Quartet of 2019 BBWAA Hall of Famers - Cooperstown Cred

The hairs versus the squares': How the 1972 A's won it all while breaking barriers with their upper lips - The Athletic