1978: Karpov - Korchnoi (FIDE/match) - PGN games and commentary.
1984-1990 (5 matches): Kasparov - Karpov (FIDE/matches) - Commentary, games and links for all five world championship matches between these two.
3000+ Games: 1960-1998 - Click to download zip file (PGN format).
Anatoly Karpov Unofficial Page - Biography, matches, books, and tournaments.
Chess Dominion - Gallery Of Champions: Anatoly Karpov
chesscorner.com - Anatoly Karpov
Encyclopedia.com - Results for Karpov, Anatoly