One of the things we love about the boroughs in southwest Pennsylvania is that many of them have a historical society and museum dedicated to sharing the history of the area.
Some of these, like the Saxonburg Museum, are huge. Others, like the Harmony Museums, are spread out over multiple historical buildings that are all worth exploring.
In Donora, the museum managed by the Donora Historical Society is fairly small. But what it lacks in size it makes up for in sharing the borough's history and the Donora Smog environmental disaster.