1969 World Champion Jerry Koosman Goes Unfiltered With Howie Rose
April 23, 1969: Jerry Koosman gets his first win in Mets' miracle season – Society for American Baseball Research
Top 10 New York Mets of All Time - Sports Illustrated
Jerry Koosman's No. 36 retired by Mets
Jerry Koosman- Mets All Time Lefthander (Part Three 1974-1985)
Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman- Mets All Time Lefthander (Part Three 1974-1985)
Mets will retire Jerry Koosman's number in 2020 – New York Daily News
Jerry Koosman- Mets All Time Lefthander (Part Three 1974-1985)