Yankees want to stop issuing uniform numbers to managers, coaches because they're running out
How many jersey numbers do the Yankees have left? - Deseret News
National Baseball Hall of Fame and Museum ⚾ on Twitter: "Lou Gehrig's #4 was the first number retired by an @MLB team, and it opened the door for other teams to follow
Retired number - Wikipedia
Retired Uniform Numbers in the American League | Baseball Almanac
Yankees next retired number prediction
New York Yankees Retired Number Vinyl Decal New York Yankees - Etsy