Mets to retire Jerry Koosman's No. 36 in June - Newsday
Jerry Koosman's No. 36 to Be Retired By Mets in June – NBC New York
April 23, 1969: Jerry Koosman gets his first win in Mets' miracle season – Society for American Baseball Research
Mets Retire Legendary Pitcher Jerry Koosman's No. 36 - Sports Illustrated New York Mets News, Analysis and More
Mets retire Jerry Koosman's No. 36 in Citi Field ceremony
Mets to Retire Jerry Koosman's Jersey - The New York Times
Mets to Retire Jerry Koosman's Jersey - The New York Times
Ultimate Mets Database - Jerry Koosman
Jerry koosman hi-res stock photography and images - Alamy
New York Mets news: Jerry Koosman's No. 36 will be retired next year