New York Yankees Retired Numbers - Sports Illustrated
Lou Gehrig Day: MLB to honor Yankees legend annually - Sports Illustrated
History of retired numbers dates back to Lou Gehrig Day
List of Major League Baseball retired numbers - Wikipedia
Yankees next retired number prediction
Every MLB team's retired numbers
Lou Gehrig - New World Encyclopedia
History of retired numbers dates back to Lou Gehrig Day
Lou Gehrig's disease: Why ALS is forever associated with one of America's baseball greats
On This Day, July 4: Lou Gehrig announces retirement
America's Tragic Hero: The Yankees's Lou Gehrig
As cases for Roy Halladay and Dick Allen point out, baseball's retired numbers are multiplying