Every MLB team's retired numbers
Retired Uniform Numbers in the American League
History of retired numbers dates back to Lou Gehrig Day
What the Yankees' uniform number crunch could cost MLB's managers and coaches - The Athletic
Yankees Retired Numbers
List of Major League Baseball retired numbers - Wikipedia
THE YANKEES ALL-TIME RETIRED NUMBERS 19”x13” COMMEMORATIVE POSTER
Yankee Retired Numbers: The All-Time Numerical Lineup of Yanks
Every MLB team's retired numbers – NBC Sports Chicago
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
Every NBA Team's Retired Numbers - Fadeaway World
Retired number - Wikipedia