1972 Topps - Jerry Koosman #697 - High Number - Pitcher - …
Baseball MLB 1970 Topps #610 Jerry Koosman Mets : Collectibles & Fine Art
Mets retire Jerry Koosman's No. 36 in Citi Field ceremony
Mack's Mets: FROM 2006- RETRO-POST ON JERRY KOOSMAN Koosman Shuts The Door! - Jerry Koosman- Hall-Worthy & On Par With Zito!!!
The perpetually underrated Jerry Koosman – Mets360
Jerry Koosman: NY Mets legend on jersey retirement, World Series
September 30, 1979: Jerry Koosman reaches 20-win plateau for second time – Society for American Baseball Research
Jerry Koosman earns praise from teammates
Jerry Koosman Sets Early Franchise Record - Mets History
1975 #19 Topps Card is of New York Mets' Jerry Koosman – 15 Cent Cards One at a Time