Since interleague games began in 1997, there have been many of these series reminding fans of World Series games contested decades before.
Two weekends ago, the Pirates visited Baltimore for the first time since they won the 1979 — “We Are Family” — World Series against the Orioles. That same weekend, the Red Sox played the Reds in Cincinnati for the first time since the Reds won the 1975 — “Carlton Fisk Foul Pole Home Run” — World Series against the Sox.
I have no idea if it's a person or a computer making the interleague matchups, but it seems like World Series rematches have been a conscious calculation this time around. I've read a lot of articles like these that force me to reflect on the past, but nostalgia can be a double edged sword. While the "historic" matchups like these are supposed to inspire fond remembrances, nothing diminishes the 1975 World Series more than seeing Norris Hopper in left field when I'm thinking about Pete Rose. Or seeing Darrell on the mound when I'm reminded of Whitey Ford.