This Day in NY Mets History: Jerry Koosman makes his MLB debut
Mets To Retire Jerry Koosman's No. 36 In 2020 - Metsmerized Online
NY Mets honor legend Jerry Koosman by retiring No. 36 jersey
Mets retire Willie Mays' No. 24 as Old-Timers' Day returns
Mets retire Koosman's 36 five decades after '69 heroics
Mets retire Willie Mays' No. 24 as Old-Timers' Day returns
Mets' next retired numbers prediction
Mets retire Keith Hernandez's No. 17
Mets to Retire Jerry Koosman's Jersey - The New York Times
How New York Mets signed pitcher Jerry Koosman thanks to eagle
Jerry Koosman is only Mets pitcher with this unusual accolade
Mets to retire Jerry Koosman's No. 36 in June - Newsday