All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Yankees help pay tribute to former Pirates great Roberto Clemente - Newsday
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
MLB expands list of who can wear No. 21 to honor Roberto Clemente on Sept. 15 - ESPN
A Mystery Surrounding the Roberto Clemente '21' Patch
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
All Pirates Wearing #21, Rest of MLB Wears Patches in Honour of Roberto Clemente – SportsLogos.Net News
Major league baseball coaches hi-res stock photography and images - Alamy
Pirates wear No. 21 to honor Roberto Clemente
Roberto Clemente Award winners to wear cap patch
The Cover-Up of '73 (no, not Watergate)
Roberto Clemente day: Puerto Rican MLB players, Pirates wear No. 21
Houston Astros: 8 players don No. 21 on Roberto Clemente Day