Dodgers retire 3 numbers Koufax, Robinson and Campanella - This Day In Baseball
Retired numbers – Dodger Thoughts
MLB allows more players to wear No. 21 to honor Roberto Clemente – NBC Sports Chicago
Should MLB Eliminate Uniform Numbers — and Even Jerseys — for Managers and Coaches?
Retired Numbers Los Angeles Dodgers
ASU Retires Dodgers Andre Ethier's Number
Dodger Uniforms Through The Years – LA Dodger Talk
New York Yankees retired numbers: Is team too generous? - Sports Illustrated
Los Angeles Dodgers - Wikipedia
All-Time Brooklyn & Los Angeles Dodgers Retired Numbers
The only day MLB players can wear No. 42? Jackie Robinson Day
How players are using uniform numbers to break MLB's unwritten rules - ESPN