Yankee Retired Numbers: The All-Time Numerical Lineup of Yanks
The Yankees Retired Derek Jeter's Number, and Things Got Slightly Weird
Yankees retire Mariano Rivera's number
The case for retiring Graig Nettles' number - Pinstripe Alley
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COUNTING DOWN: The Best Yankee At Each Uniform Number (#32)
Yankees retired numbers: A look at all of the jersey numbers players cannot wear in the Bronx
Yankees retire Posada's No. 20
New York Yankees Retired Numbers - - Database of Yankee Uniform Numbers Through the Years
Zero single-digit numbers in the Bronx? Actually, there's still one left - ESPN
Every Yankees Retired Number
File:YankeesRetired3.svg - Wikipedia
New York Yankees retired Paul O'Neill's No. 21 jersey
