This Date in Mets History: June 24 — Koosman wins 100th game
Remembering Mets History (1969) World Series Game #5: Amazing Mets
Remembering Mets History (1969) World Series Game #5: Amazing Mets
October 16, 1969: Miracle Mets become first expansion team to win
MORE
Remembering Mets History (1969) World Series Game #5: Amazing Mets
WS1969 Gm4: Gaspar scores, Mets win on error in 10th
This Date In Mets History: September 16 — 20 Wins for Koosman, 20
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Remembering Mets History (1968): Jerry Koosman Tosses Back to Back
Remembering Mets History (1969) World Series Game #4: Tom Terrific
Remembering Mets History (1976) Jerry Koosman Wins His 20th Game
The 1969 New York Mets: The All-Stars - Metsmerized Online
Mets to Retire Jerry Koosman's Jersey - The New York Times