Mets' retired numbers
50 greatest Mets of all time - Newsday
Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman's No. 36 retired by Mets
Mets retire Jerry Koosman's No. 36 in Citi Field ceremony
Mets announce Jerry Koosman number retirement date
Keith Hernandez's number retired; 5 Mets who should be next - BVM
Mets to retire Koosman's number — Queens Daily Eagle
Memories still fresh as Mets celebrate 1969 World Series title's
Mets retire Koosman's 36 five decades after '69 heroics