Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx

Yankee Stadium (1923) - Wikipedia

The Worst Players to Wear Each of the 21 Retired Yankees Numbers - Sports Pickle

The Top Current MLB Player Wearing Each Number from 1 to 50, News, Scores, Highlights, Stats, and Rumors

Have the Yankees taken retired numbers too far?, Bronx Pinstripes

On the Yankees, retired numbers and a solution in search of a problem

Zero single-digit numbers in the Bronx? Actually, there's still one left - ESPN

Retired Numbers

Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them

What should the Yankees do once they run out of numbers? - Pinstripe Alley

What number will New York Yankees rookie Anthony Volpe wear?

Best Yankees players by uniform number