September 14, 1968: Denny McLain's 30th victory – Society for American Baseball Research
Detroit's Denny McLain wins 30th game of the year
Denny McLain, 1968 Baseballs last 30 game winner. We will not see another 30 game winner. HOF
SABR Convention History – Society for American Baseball Research
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SABR Convention History – Society for American Baseball Research
Denny McLain recalls the day of his 30th victory
Walk-off seals McLain's 30th win, 09/14/1968
SABR Convention History – Society for American Baseball Research
Detroit's Denny McLain wins 30th game of the year
Detroit's Denny McLain wins 30th game of the year
Denny McLain - Wikipedia
SABR Convention History – Society for American Baseball Research
1968 09 14 Athletics at Tigers Baseball Radio
The Season of High Heat - Sports Illustrated Vault
THE VOICE OF SUMMER'S PAST REMEMBERED: DENNY McLAIN WINS 30! SEPTEMBER 14, 1968 – Motor City Radio Flashbacks
SABR Convention History – Society for American Baseball Research