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

Mets retire Keith Hernandez's number in emotional ceremony

Jerry Koosman – Society for American Baseball Research

When You Came on That Was a Big Deal'- Comedian Jerry Seinfeld Sends Heartwarming Message to NY Mets Legend Keith Hernandez on His Jersey Retirement Day - EssentiallySports

Mets and rest of MLB react to Tom Seaver's death

Jerry Koosman's No. 36 Retired By the Mets, The greatest money pitcher in the history of the Mets. Congratulations to Jerry Koosman on his Mets number retirement!, By SNY

New York Mets - Wikipedia

Jerry Koosman - Wikipedia

Honoring Jerry Koosman: To break a slump, Mets look to the past - The Athletic

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

Mets Grab Hold of the Series - The New York Times