Crowdsourcing is a new term but it’s not a new idea. In the 19th century, thousands of volunteers submitted entries to the Oxford English Dictionary, for instance. But if you’ve ever used Wikipedia, you know the internet has made crowdsourcing possible on a much larger scale. Historians are among those taking advantage of the internet’s broad reach. How is our increased connectivity changing the way we tell stories about the past? We’ll talk with Denise Meringolo, a historian at the University of Maryland Baltimore County, and Joe Tropea, digital projects coordinator at the Maryland Historical Society, about how they’re collecting and archiving materials from the Baltimore Uprising of 2015.