Ken Griffey Jr. had Jackie Robinson Day idea

Ken Griffey Jr., Mike Piazza, and the Baseball Hall of Fame's Shifting Attitudes on Doping in 2016 - The Atlantic

Remembering Jackie Robinson Day

Griffey family dinner lessons led to enduring way to honor Jackie Robinson

MLB Vault on Twitter: Ken Griffey Jr. came up with the idea of wearing No. 42 on April 15th. On the first Jackie Robinson Day when the number was worn league-wide (2009)

Charlie Blackmon, Rockies appreciate 75th anniversary of Jackie Robinson's debut

From Jackie to Junior. How Ken Griffey Jr. invented Jackie…, by Adam Worcester

Jackie Robinson Day is April 15 when MLB celebrates - Sports Collectors Digest

April 15th

Griffey, Suzuki, Mariners roll 11-3 over Angels - The San Diego Union-Tribune

McFarlane Toys announces Jackie Robinson Day commemorative Sports Picks toys - Beckett News

Big Red: Baseball, Fatherhood, and My Life in the Big Red Machine: 9781600785443: Griffey, Ken, Pepe, Phil, Foster, George: Books