Senate resolution honoring Pirates baseball legend Roberto Clemente
Retire No. 21 for Roberto Clemente - Our Esquina
Pittsburgh Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente
Roberto Clemente impact is still felt 50 years after his tragic death
High and Tight: Our Rock & Roll Baseball Experts Talk Retired Numbers
Clemente's #21 will not be retired across MLB despite report
The Cycle, Issue 60: NL Awards Watch, Vol. II
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
Here's why it would be a bad idea for MLB to retire Roberto Clemente's No. 21
It's going to be unbelievable': Pirates psyched to honor Roberto Clemente by donning No. 21 next week
Retire #21? Please don't! – FOB Sports (Friends of Bob)