8 Candidates to Break Bob Gibson's ERA Record in MLB's Shortened
From Bob Gibson to Jason Dickson Some Stories about Pitchers
MLB Power Rankings: Bob Gibson and the Most Intimidating Pitcher
MLB Year of the Pitcher: Current situation mirrors 1968 - Sports
8 Candidates to Break Bob Gibson's ERA Record in MLB's Shortened
39 – Bob “Hoot” Gibson: So Good As A Pitcher, MLB Had To Lower The
Bob Gibson, Baseball Wiki
MLB Lowered The Mound Because Black Ace 'Bullet' Bob Gibson Was
After 1968's 'Year of the Pitcher,' MLB lowered the mound. Now