Throwback Thursday: Jackie Robinson breaks color barrier (Oct 30
History of retired numbers dates back to Lou Gehrig Day
Baseball Unveils Retired Numbers Display - State of The U
New York Mets - Wikipedia
Players now have jersey numbers, and teams can retire jersey
Every MLB team's retired numbers
The 'First number retired for every MLB team' quiz
What Makes a Team Great? - The Atlantic
Dodgers to retire Fernando Valenzuela's No. 34 this summer
MLB expansion: What cities could get a major league baseball team
A little group of collages I made featuring the most retired
Ilitch needs to right his dad's wrongs
Five Astros wear No. 21 on Roberto Clemente Day