Because the Cubs and Red Sox playing a three-game series in Fenway Park wasn't already awesome enough, both teams are going to wear throwback uniforms for the game on Saturday night:
↵↵↵As for the uniforms, the Red Sox's on Saturday will be a blank button-up with no lettering and a slight off-white or ivory color. The cap will also have a blank off-white tint, and the socks will be a three-part white-red-white combo. Boston didn't wear the familiar blue cap with a red "B" until the early 1930s.
↵Chicago will wear navy blue pinstripes and lettering on a grayish uniform. The Cubs used this uniform for only one season, changing their road uniforms on an almost-yearly basis during the 1910s.
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It sounds like both teams will be wearing the version of their uniform from the last time the Cubs visited the Red Sox at Fenway Park, for the 1918 World Series.