The perpetually underrated Jerry Koosman – Mets360

1969 Mets Pitchers 16x20 Photo Signed by (4) With Tom Seaver, Jerry Koosman, Nolan Ryan & Gary Gentry (FSC COA & Ryan Hologram)

Jerry Koosman Baseball Stats by Baseball Almanac

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NY Mets honor legend Jerry Koosman by retiring No. 36 jersey

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Mets to Retire Jerry Koosman's Jersey - The New York Times

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1988 Pacific Legends Zoilo Versalles #107 Dodgers. 1988 Pacific Legends Dick Groat #108 Cardinals. 1988 Pacific Legends Warren Spahn #109 Braves. 1988

1988 Pacific Legends Jerry Koosman #66 Mets

66 Jerry Koosman - New York Mets - 1988 Pacific Legends I Baseball – Isolated Cards