Clemente Museum Starts Petition To Retire No. 21 Across MLB - CBS Pittsburgh
Petition · Retire Roberto Clemente's Number 21 from Major League Baseball ·
What If … Roberto Clemente had played 3 more seasons with the Pirates? - The Athletic
Roberto Clemente's death 50 years ago forever changed his son, a former Phillies minor leaguer
Should Roberto Clemente's number be retired leaguewide?
Should Roberto Clemente's Number 21 be Retired Across all of the MLB?
TSN Archives: Baseball Mourns Loss of Bucs Star Clemente (Jan. 13, 1973, issue)
Paul O'Neill on No. 21 retirement Yankees
Demilio: Roberto Clemente Day Serves as Another Reminder to Retire No. 21
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
Roberto Clemente getting the ball from his 3,000th hit. It would be his last : r/baseball
MLB should retire Roberto Clemente's No. 21
Outside The Confines: Everyone wore 21 - Bleed Cubbie Blue