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

Minnesota native Koosman to have his No. 36 retired by Mets in June - Post Bulletin

Mets to retire Jerry Koosman's No. 36 in June - Newsday

Mets to retire numbers for Doc Gooden and Darryl Strawberry – NBC New York

Mets Editorial: How exclusive should number retirement be? - Amazin' Avenue

Mets retire Keith Hernandez's No. 17 in Citi Field ceremony

Mets retire Willie Mays' No. 24 as Old-Timers' Day returns

Thrilled to be 'joining a great crew,' Jerry Koosman, 78, has jersey retired by New York Mets - ESPN

Mets To Retire Jerry Koosman's No. 36 In 2020 - Metsmerized Online

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