Today in Oakland A's history (5/9): Dallas Braden throws perfect game - Athletics Nation
Retired Numbers Oakland Athletics
Hunter, Catfish Baseball Hall of Fame
Athletics on the wrong side of history with Domingo Germán's perfect game
Complete List — And Quirky Nuggets — Of All 24 Perfect Games in Major League Baseball History - Fastball
Today in Oakland A's history (5/8): Catfish Hunter throws perfect game - Athletics Nation
All-Time Oakland Athletics All-Stars By Single Season WAR - The Pitchers - Athletics Nation
Oakland's Braden is perfect against Rays - The San Diego Union-Tribune
Athletics reflect on losing perfect game to Yankees' Domingo German
Dallas Braden enters history books by pitching perfect game, MLB
Dallas Braden Admits He Was Hungover for 2010 Perfect Game With Athletics
Catfish' Hunter tosses perfect game, 48 years ago today
Athletics on the wrong side of history with Domingo Germán's perfect game