Jerry Koosman Autographed Jersey - Mets History
Mets Announce Plans to Retire Jerry Koosman's Uniform #36, by New York Mets
Jerry Koosman: All Time Mets Left Handed Pitcher (Part Two-1973-1978)
Memorabilia Ultimate Team Set
Lot Detail - 1969 World Champion New York Mets Team-Signed Ball with (29) Signatures LOA JSA with World Series Program and Ticket Stub
Jerry Koosman Autographed Jersey - Mets History
Honoring Keith Hernandez's No. 17 jersey retirement with 17 stories of the Mets lifer - The Athletic
1969 Mets Pitchers 16x20 Photo Signed by (4) With Tom Seaver, Jerry Koosman, Nolan Ryan & Gary Gentry (FSC COA & Ryan Hologram)
Mets set to pay tribute to Jerry Koosman - Newsday