Jerry Koosman- Mets All Time Lefthander (Part Three 1974-1985)
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Jerry Koosman - Mets History
Insiders: Jerry Koosman to attend 2020 Queens Baseball Convention - The Mets Police
Jerry Koosman - Mets History
Ultimate Mets Database - Jerry Koosman
Ultimate Mets Database - Jerry Koosman
Jerry Koosman Stats, Fantasy & News
Out Of The Shadows: Jerry Koosman - Metsmerized Online