Be careful out there, America

And on independence day, teenage boys hurt themselves with fireworks.

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The thumbnail is a postcard distributed in 1911 from a toy and fireworks dealer in Pittsburgh that we found at the Smithsonian National Museum of American History. You can find out more about it, and the "patriotic tetanus" that earlier generations of July 4th celebrants experencied, here: http://americanhistory.si.edu/blog/patriots-got-tetanus

Brian Resnick wrote more about the annual ritual of teenage boys endangering life and limb at vox.com: https://www.vox.com/science-and-health/2017/7/3/15914160/fireworks-injuries-hospitalizations

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