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1969 Topps Jerry Koosman
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Ultimate Mets Database - Jerry Koosman
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September 30, 1979: Jerry Koosman reaches 20-win plateau for
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Ny Mets Jerry Koosman Pitching by Bettmann
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The perpetually underrated Jerry Koosman – Mets360
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This Date in Mets History: April 14 — Kooz debuts, Ryan wins first
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This Day in NY Mets History: Jerry Koosman makes his MLB debut
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Remembering Mets History (1968): Jerry Koosman Tosses Back to Back
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Mets to Retire Jerry Koosman's Jersey - The New York Times
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Mets to Retire Jerry Koosman's Jersey - The New York Times
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Red Schoendienst, Jerry Koosman, and Randy Hundley meet on mound
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MetsRewind on X: The #Mets have cultivated some of the greatest
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The Mets' Best Doubleheader, From 1969 - The New York Times
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Mets set to pay tribute to Jerry Koosman - Newsday