1965 World Series: Sandy Koufax's visit to St. Paul synagogue a matter of faith – Twin Cities
50 years later, here's how Sandy Koufax made it to the Hall of Fame
If Sandy Koufax is a Hall of Famer, Johan Santana Is Too. Making The Case For No-han, by Brian P. Mangan
Sandy Koufax's best stats and accomplishments
Los Angeles Dodgers pitcher Sandy Koufax relives his finest game - ESPN
VEB Historical Hall of Fame Voting: Part 8 - Viva El Birdos
The Toughest (and Easiest) Sandy Koufax Cards to Find in High Grade
Tyler Mahle, Sandy Koufax and why the Reds should make Mahle an offer he can't
Does anybody think that Sandy Koufax had the best five year peak of any pitcher in the live ball era (since 1920)? - Quora
Sandy Koufax's best stats and accomplishments
The Left Arm of God: Sandy Koufax was pitcher perfect on and off the field - Sports Illustrated
Sandy's swan song: 50 years ago today, by Mark Langill