Mets to Retire Jerry Koosman's Jersey - The New York Times
Mets to Retire Jerry Koosman's Jersey - The New York Times
Jeff Jacobs: A 14-year-old fan, Tom Terrific and Oma's Metsies — how baseball marks time
April 23, 1969: Jerry Koosman gets his first win in Mets' miracle season – Society for American Baseball Research
The 24 best players in New York Mets history
Jerry Koosman: All Time Mets Left Handed Pitcher (Part One: 1967-1972)
Mets retire Koosman's 36 five decades after '69 heroics
A magical day in Mets history ended with a necessary win in the scorecard
A magical day in Mets history ended with a necessary win in the scorecard
Remembering Mets History (1969) World Series Game #5: Amazing Mets Are World Champions