History of retired numbers dates back to Lou Gehrig Day
The forgotten history of baseball players' numbers – Cranberry Eagle
31 The Lou Gehrig Story Stock Photos, High-Res Pictures, and Images - Getty Images
MLB will hold annual Lou Gehrig Day on June 2, Trending
MORE
Lou Gehrig's number is retired by the Yankees on July 4th
Baseball In Pics on Instagram: “Lou Gehrig had his number 4 retired, and gave one of the great speeches in history on “Lou Gehrig Day”, July 4, 1939.”
Lou Gehrig, Biography, Statistics, Disease, & Facts
Yankees Retired Numbers - Who Are The 22 Yankees Who Wore Them
Lou Gehrig Major League debut 100th anniversary
National Pastime Museum: LOU GEHRIG APPRECIATION DAY AT 75 – Marty Appel
Lou Gehrig Jersey Numbers Collection Upper Deck LE 42/100 Framed #4 Yankees 2005
America's Tragic Hero: The Yankees's Lou Gehrig
Pack has retired just six uniform numbers - Hub City Times
MLB Celebrates Inaugural Lou Gehrig Day
10 Things You May Not Have Known About Lou Gehrig - Phi Delta Theta Fraternity