Classic Mariners Games: Ken Griffey Jr. Hits 56th Home Run in 1998, by Mariners PR
ESPN - Ken Griffey Jr. has four seasons of at least 40 HR, 120 R, 130 RBI and 15 SB. All other outfielders in MLB history have six such seasons combined 😱 (h/t MLB Stats)
Ken Griffey Jr. on memorable home runs in his career - Marquee Sports Network
Ken Griffey Jr. retiring from Major League Baseball at age 40
Ken Griffey Jr. made Seattle feel like center of universe during Hall of Fame career
It's a Wonderful Life, Ken Griffey: After Near Tragic Death, KGJ Is Going To Baseball's Hall of Fame
Stream %! Ken Griffey Jr., The Inspiring Story of One of Baseball's Greatest Outfielders, Baseball Bio by User 687650712
Ken Griffey, Jr., Biography, Statistics, & Facts
Ken Griffey Jr.'s best MLB moments
Junior's achievements: 24 of Ken Griffey Jr.'s most remarkable feats - ESPN
For Hall of Fame-bound Ken Griffey Jr., it all started with the swing
Matt Christopher Sports Bio Bookshelf: At the Plate WithKen Griffey Jr. (Paperback)