Pinnacle and Score – SABR's Baseball Cards Research Committee
The Junior Junkie: the Baseball Cards of Ken Griffey, Jr. and Beyond: Top 30 Griffey Acquisitions of 2017 Part 1: #21-30
andruw jones – The Baseball Card Blog
Tale of Two Griffeys: More Recent Struggles Obscure Best of Times in the 1990s « The Captain's Blog
The Junior Junkie: the Baseball Cards of Ken Griffey, Jr. and Beyond
Baseball Happenings: Video
Why did Dick Allen never make it on an MLB Hall of Fame ballot? - Quora
Baseball Happenings: Video
The Junior Junkie: the Baseball Cards of Ken Griffey, Jr. and Beyond: Top 30 Griffey Acquisitions of 2017 Part 1: #21-30
Ken Griffey, Jr. Facts for Kids
Statistically who had the better MLB career from age 30 onward - Ken Griffey Sr. or Ken Griffey Jr.? - Quora
Ken Griffey Jr.'s First At-Bat Back in Seattle with the Mariners ~April 14, 2009~