Mets retiring No. 36 of ex-pitcher Koosman in '20 - ESPN

Jerry Koosman's No. 36 retired by Mets

Jerry Koosman: All Time Mets Left Handed Pitcher (Part One: 1967-1972)

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

Jerry Koosman's No. 36 retired by Mets

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

Nolan Ryan - Wikipedia

Jerry Koosman - Wikipedia

Bob Gibson once upon a .406

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

Tom Seaver - Wikipedia

R. A. Dickey - Wikipedia