Retrosheet
Retrosheet is a 501(c)(3) nonprofit organization whose website features box scores of Major League Baseball (MLB) games from 1898 to the present, and play-by-play narratives for almost every contest since 1910. It also includes scores from all major league games played since the 1871 season (the inception of organized professional baseball), as well as every All-Star Game and postseason game, including the World Series, as well as the Negro leagues' East–West All-Star Game and World Series.