Nolan Ryan Autographed Memorabilia
Heritage Auctions, Sports Collectibles Auction 7041, Dallas Texas
Jerry koosman hi-res stock photography and images - Alamy
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1969 Mets Pitchers 16x20 Photo Signed by (4) With Tom Seaver
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Mets to Retire Jerry Koosman's Jersey - The New York Times
Jerry Koosman Autographed Jersey - Mets History
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