July 6, 2012 1:28 PM

Wool cap at WWI baseball exhibit is a reminder to stay cool

Visitors and residents may complain about the heat outside of MLB's All-Star FanFest, but imagine wearing his wool baseball cap out on the diamond in June and July.

Wool caps and jerseys were worn by Inter-Allied competitors in France during the summer of 1919. Probably a lot hotter than a FanFest T-shirt.

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