April 23, 1969: Jerry Koosman gets his first win in Mets' miracle season – Society for American Baseball Research
Mets Great Tom Seaver Dies At 75
Mets To Retire Hernandez's Number In Coming MLB Season
Jerry Koosman's No 36 to be retired by Mets in June
Mets to Retire Jerry Koosman's Jersey - The New York Times
Humble Jerry Koosman joins Mets hopefully-expanding pantheon with number retirement