All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Pittsburgh Pirates - Wikipedia
Burgh's Best to Never Wear It: Honus Wagner holds Pirates records more than a century after he retired
Pittsburgh Pirates Mark 50 Years Since Historic All-Black And -Latino Lineup
Nike Men's Pittsburgh Pirates Roberto Clemente #21 Grey Cooperstown V-Neck Pullover Jersey
The best players to wear every jersey number in Pirates history - The Athletic
50 Years Later, the Pirates' Lineup of Color Still Resonates - The New York Times
The 9 greatest players in Pittsburgh Pirates history
The best players to wear every jersey number in Pirates history - The Athletic
When I wear it, I'm representing something': The stories behind the Pirates' uniform numbers - The Athletic
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago