Jerry Koosman Autographed Jersey - Mets History

Jerry Koosman earns praise from teammates

Keith Hernandez still in awe ahead of Mets jersey retirement

Jerry Koosman MLB Memorabilia, Jerry Koosman Collectibles, Verified Signed Jerry Koosman Photos

Jerry Koosman - Wikipedia

Jerry Koosman: NY Mets legend on jersey retirement, World Series

1969 Mets OML Baseball Team-Signed by (24) with Tom Seaver, Nolan Ryan, Donn Clendenon, Jerry Koosman, Cleon Jones, Al Weis (JSA LOA)

Honoring Keith Hernandez's No. 17 jersey retirement with 17 stories of the Mets lifer - The Athletic

This Date In Mets History: September 7 — Kooz's Streak Concludes, Maz Makes His Debut - Amazin' Avenue

Jerry Koosman Autographed Jersey - Mets History

With Little to Celebrate, Mets Honor a Title-Winning Team - The New York Times