Thrilled to be 'joining a great crew,' Jerry Koosman, 78, has
PSA Magazine: 2023 February #014 by PSA Magazine - Issuu
PSA Magazine: 2023 February #014 by PSA Magazine - Issuu
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Mets to Retire Jerry Koosman's Jersey - The New York Times
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New York Mets Collecting Guide, Tickets, Jerseys