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

Card Corner Plus: 1972 Topps: Sleuthing Tommy Davis

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

1970's Oakland A's

Oakland A's The Baseball Codes

The Oakland A's and MLB Take One Step Forward, 36 Years Throwback - ESPN - SportsCenter.com- ESPN

Mike Schmidt Baseball classic, Phillies baseball, Baseball stadium

1973 World Series 50th Anniversary Reunion

Mustaches and Mayhem: Charlie O's Three-Time Champions: The Oakland Athletics: 1972-74 (SABR Digital Library): Greene, Chip, Greene, Chip, Erion, Greg, Levin, Len, Nowlin, Bill, Wolf, Gregory H., Wancho, Joe, Armour, Mark, Costello

1977 and the Hirsute Hardball Hero – SABR's Baseball Cards Research Committee

Jackson traded to Orioles prior to becoming a free agent

Today in Baseball History: Oakland's Mustache Gang is born - NBC Sports

Vida Blue wears his battle scars, Baseball

How baseball changed forever in 1972: A timeline of MLB's most memorable events, 50 years later

Oakland A's The Baseball Codes