The Niekro Files: The Uncensored Letters of Baseball's Most Notorious Brothers (inscribed) by Phil and Joe with Ken Picking Niekro - Hardcover - 1988. - from Auldfarran Books, IOBA (SKU: 4935)
Hall of Fame pitcher Phil Niekro, famous for signature knuckleball, dies at 81 - ESPN
Sports Illustrated - Phil Niekro, Hall of Fame pitcher and master of the knuckleball, has died at 81. RIP 🙏
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Phil Niekro dies at 81
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Phil Niekro, Baseball Hall of Fame Pitcher, Dies at 81 - TheWrap
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Baseball Reference on Instagram: R.I.P. Phil Niekro