Mets Retire Koosman's 36 Five Decades After '69 Heroics - CBS New York
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Keith Hernandez's number retired; 5 Mets who should be next - BVM Sports
Mets retire Koosman's 36 five decades after '69 heroics
Mets retire Koosman's 36 five decades after '69 heroics
Jerry Koosman's No. 36 retired by Mets
Art Shamsky – Society for American Baseball Research
Mets announce Jerry Koosman number retirement date –
Mets retire Koosman's 36 five decades after '69 heroics - The San Diego Union-Tribune
50 greatest Mets of all time - Newsday
Mets News: Mets to retire Jerry Koosman's number 36 in 2020. - Amazin' Avenue
Game of Numbers Serious Jammage
Jerry Koosman number retirement set for June 13 - Amazin' Avenue