Koosman Jersey Retirement - Aug 28
Jerry Koosman to Have Number Retired on August 28, 2021
Humble Jerry Koosman joins Mets hopefully-expanding pantheon with
New York Mets retire Koosman's No. 36 - Taipei Times
Jerry Koosman number retirement set for June 13 - Amazin' Avenue
Mets retire Koosman's 36 five decades after '69 heroics
New York Mets - We will retire Jerry Koosman's number 36 in 2020
Jerry Koosman's No. 36 to Be Retired By Mets in June – NBC New York
Marine veteran Tom Seaver, heart and mighty arm of Miracle Mets
New York Mets get it right with Keith Hernandez honor