Jerry Koosman: All Time Mets Left Handed Pitcher (Part Two-1973-1978)
Humble Jerry Koosman joins Mets hopefully-expanding pantheon with number retirement
Jerry Koosman (2003) – Society for American Baseball Research
Jerry Koosman - Mets History
Ultimate Mets Database - Jerry Koosman
Jerry Koosman - Mets History
Jerry Koosman interview
Jerry Koosman: NY Mets legend on jersey retirement, World Series
Ultimate Mets Database - Jerry Koosman
Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman - Mets History
Jerry Koosman Stats, Fantasy & News