The retired numbers of Lou Gehrig, Babe Ruth, Joe DiMaggio and

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List of Major League Baseball retired numbers - Wikipedia

From Babe Ruth to Derek Jeter: New York Yankees Legends Who's Jersey Number Has Been Retired

Source: No decision yet about when Derek Jeter's No. 2 will be retired - Newsday

Yankee Stadium: Monument Park - Retired Numbers - Babe Rut…

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Joe DiMaggio, Baseball Wiki

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Yankees Retired Numbers

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June 2018 - History - U.S. Census Bureau

2017 Panini National Treasures Monumental Materials Booklets #1 Babe Ruth / Joe DiMaggio / Lou Gehrig / Mickey Mantle