KNUCKSIE HASN'T LOST HIS GRIP - Sports Illustrated Vault
Phil Niekro, Hall of Fame knuckleball pitcher, dies at 81 - The Washington Post
Baseball Card Breakdown: January 2021
The Last Phil Niekro Baseball Card Where He Didn't Look Like Your Grandfather – Wax Pack Gods
Condition is Like New. Shipped with USPS First Class Package.
1986 Topps #77T Phil Niekro Baseball Card
From Kobe to Maradona, a year of staggering losses in sports
Oakland A's Price List - Supercollector Catalog
Topps – Page 4 – SABR's Baseball Cards Research Committee
Baseball Card Breakdown: January 2021
1970 Topps Phil Niekro
1960s Phil Niekro Baseball Cards Didn't Know They Were Legends – Wax Pack Gods
Auction Prices Realized Baseball Cards 1986 Topps Traded Phil Niekro