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August 31, 1990: Ken Griffey Jr. and Sr. get back-to-back hits in father-son debut with Mariners – Society for American Baseball Research
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Ken Griffey Jr., Sr. share a catch at 'Field of Dreams' game
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Sept. 14, 1990: When the Griffeys made history with back-to-back homers
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86 Ken Griffey Jr Catch Stock Photos, High-Res Pictures, and Images - Getty Images
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On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history
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Professional mariners hi-res stock photography and images - Alamy
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On Aug. 31, 1990, Ken Griffey Jr. and Sr. became the first father-son teammates in MLB history
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From the archives: New Hall of Famer Ken Griffey Jr. - Mangin Photography Archive
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Ken Griffey, Jr. with his mother and father Ken griffey jr., Seattle mariners, Ken griffey
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Seattle's GOAT Mountain of Sports: Ken Griffey Jr., Ichiro Suzuki, Sue Bird, Russell Wilson voted best of the best
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Ken Griffey Jr. Values - MAVIN
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Ken Griffey Jr. Contract Breakdown: Ken Griffey Jr. Contract Details and History
Original KEN GRIFFEY Jr. 1990 Starz Baseball Card, Glossy Purple Border oddball card, Seattle Mariners, Near Mint condition. Second year card. Shipped
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KEN GRIFFEY Jr. 1990 Starz Baseball Card, Glossy Purple Border, Seattle Mariners, Near Mint
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Renamed Donora street honors baseball greats, Local News
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Ken Griffey Jr. Values - MAVIN