Jerry Koosman: The Story Of One Mets Veteran - Metsmerized Online
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NY Mets to retire Jerry Koosman's number next season, Jeff Wilpon says
Mets Hall of Fame
Tom Seaver had plenty of talented pitchers around him on 1969 Mets
NY Mets to retire pitcher Jerry Koosman's number next season
Jerry Koosman Mets Hall of Fame Bust - Mets History
Jerry Koosman Mets Hall of Fame Plaque - Mets History
This Day in NY Mets History: Jerry Koosman makes his MLB debut
Ultimate Mets Database - Jerry Koosman
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Jerry Koosman – Society for American Baseball Research
Mets retiring 1969 World Series hero Jerry Koosman's No. 36