Sept. 14, 1990: When the Griffeys made history with back-to-back homers
Ken Griffey Jr. recalls days with dad, ousting Yankees in playoffs – New York Daily News
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Like Father, Like Son Raglan – Big Fly Gear
On This Date: The Griffeys Hit Back-to-Back Home Runs, by Mariners PR
Ken Griffey Jr. and Sr. hit back-to-back home runs
Ken Griffey Jr. recalls days with dad, ousting Yankees in playoffs – New York Daily News
Ken Griffey Jr & Ken Griffey Sr Seattle Mariners Back to Back Home Run FOCO
Sept. 14, 1990: When the Griffeys made history with back-to-back homers
Ken Griffey Jr & Ken Griffey Sr Seattle Mariners Back to Back Home Run FOCO
August 31, 1990: Ken Griffey Jr. and Sr. get back-to-back hits in father-son debut with Mariners – Society for American Baseball Research
Ken Griffey Jr. And His Dad Once Hit Back-To-Back Home Runs
Like Father, Like Son Tee – Big Fly Gear
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Ken Griffey Jr. and Mike Piazza Trot Into Baseball Hall of Fame - The New York Times
