Jerry Koosman number retirement set for June 13 - Amazin' Avenue

Jerry Koosman's No 36 to be retired by Mets in June

Jerry Koosman's No. 36 to Be Retired By Mets in June – NBC New York

Jerry Koosman Jersey Retirement Ceremony

Mets to retire Koosman's number — Queens Daily Eagle

Jerry Koosman Jersey Retirement Ceremony

NY Mets to retire Jerry Koosman's number next season, Jeff Wilpon says

Jerry Koosman's number retirement, 08/28/2021

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