PHOTOS: On this day - June 2, 1935, Babe Ruth retires
Babe Ruth (Baseball Legend) - On This Day
History of retired numbers dates back to Lou Gehrig Day
1930: The year Shawkey managed Ruth and Gehrig
Yankees retired numbers and the baseball legends who wore them
99 Cool Facts About Babe Ruth - Sports Illustrated
CLE@NYY: Yankees retire Babe Ruth's iconic No. 3
With Derek Jeter's number retired, Yankees shouldn't be retiring
Babe Ruth, Retired Number
Babe Ruth - Baseball Legend, Record Holder, Legacy
Tallahassee Leon Babe Ruth baseball readies for Southeast Regional
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore
History? This Ruth Just Wants to Make the Yankees - The New York Times