Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman's No. 36 to Be Retired By Mets in June – NBC New York
Jerry Koosman's No 36 to be retired by Mets in June
Jerry Koosman Jersey Retirement Ceremony
Mets retiring No. 36 of ex-pitcher Koosman in '20 - ESPN
Ultimate Mets Database - Jerry Koosman
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Thrilled to be 'joining a great crew,' Jerry Koosman, 78, has jersey retired by New York Mets - ESPN
Jerry Koosman Jersey Retirement Ceremony