Phil Niekro, Hall of Fame knuckleball pitcher, dies at 81 - The Washington Post
Cardboard appreciation: 1981 Topps 1980 NL Championships
Cardinals Hall of Fame pitcher Bob Gibson dies at age 84
Hall of Fame pitcher Bob Gibson dies at 84 - Chicago Sun-Times
From Yankee Blue to Cardinal Red — Roger Maris Gets New Leaf on Baseball Life, by Daniel Dullum
There will never be another
Bob Gibson, uncompromising St Louis Cardinals pitching ace, dies aged 84, MLB
Braves Throwback Thursday: A look back at those we lost in 2020 - Battery Power
Remembering the Intense and Indomitable Bob Gibson (1935-2020)
Phil Niekro, Hall of Fame knuckleball pitcher, dies at 81 - The Washington Post