I added a link to DB Books. This site offers downloads of games (in either pgn or Chessbase format) without annotations that are contained in various chess books. Games by individual players, general games, openings, tactics, strategy and endings.
The idea is you download these games then play over them using an engine. I guess it would be possible to learn something, but without human explanations of the moves it's not likely, so just play over them for enjoyment.