Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Jerry Koosman's No. 36 to Be Retired By Mets in June – NBC New York
Jerry Koosman's No 36 to be retired by Mets in June
Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online
Jerry Koosman to Have Number Retired on August 28, 2021 - Metsmerized Online
TICKET Stub 9/28 1968 New York Mets JERRY KOOSMAN 3Hitter Philadelphia Phillies
Ultimate Mets Database - Jerry Koosman
NY Mets to retire pitcher Jerry Koosman's number next season
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Jerry Koosman's No. 36 retired by Mets