On Uniform No. 0, the Yankees Rule Out Nothing - The New York Times
Appreciating the retired single-digit numbers of the New York Yankees
New York Yankees Retired Numbers - Sports Illustrated
Derek Jeter's No. 2 retired: See all New York Yankees retired numbers
25 years later, remembering Billy Martin's sudden and shocking death
The Athletic] The Yankees have asked MLB if they can stop issuing uniform numbers to their manager and coaches because they're running out of numbers that aren't retired : r/baseball
Billy Martin - Wikipedia
What if the New York Yankees never retired Billy Martin's #1?
New York Yankees Retired Numbers - Sports Illustrated
Jeter returns as Yankees honor 1998 team at Old-Timers' Day, Boone booed by some
Late Yankees George Steinbrenner, Billy Martin among veteran committee picks for Hall of Fame ballot – New York Daily News
George Steinbrenner