History of retired numbers dates back to Lou Gehrig Day
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them
Major League Baseball Celebrates Lou Gehrig Day - Columbia University Athletics
Yankees retired numbers and the baseball legends who wore them
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Lou Gehrig – Society for American Baseball Research
Lou Gehrig at age 29, of The New York Yankees in spring training prior to his 1933 Triple Crown year. Less than 6 years from retiring with ALS that killed him 2
Troy Tulowitzki announces retirement from baseball – New York Daily News
History of retired numbers dates back to Lou Gehrig Day
Gehrig, Lou Baseball Hall of Fame
Retired Number Series: Cincinnatti Reds The Harvard Sports Analysis Collective
History of retired numbers dates back to Lou Gehrig Day
Lou Gehrig Is The New York Yankees' First Honored Legend
