Mets retire Koosman's 36 five decades after '69 heroics
Mets retire Willie Mays' No. 24 as Old-Timers' Day returns - CBS New York
Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman's No 36 to be retired by Mets in June - ESPN
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Jerry Koosman's Mets number retirement is finally here
Jerry Koosman's No. 36 retired by Mets
New York Mets should consider these four players for jersey retirement
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New York Mets - Wikipedia
Mets retiring 1969 World Series hero Jerry Koosman's No. 36
Jerry Koosman Autographed Jersey - Mets History