The Cubs and White Sox now play each other either four or six times a year in interleague play, depending on which division each is facing.
But from 1903 to 1942, the teams often played a Chicago “City Series” after the regular season was over, in seasons where neither won their league pennant. Twenty-six City Series were played in that era and here’s a good history of all of them.
Our friends at Flagstaff Films found these two gems from a City Series recently:
Rare Color- 1940-( Part 1 of 2) "City Series"-White Sox vs Cubs, pre-game,Wrigley Field, Chicago (from the Flagstaff Films baseball home movie archive) pic.