NW PA Heritage is a free app that puts the history of Northwestern Pennsylvania (Crawford and Venango Counties, and the Oil Heritage Region) at your fingertips. Explore unique historic places and take self-guided walking tours. Find interesting people, places and events in NW Pennsylvania history. With a growing list of interpretive stories, each point on the interactive GPS-enabled map includes historical information about the location, along with historic images from archival collections and historical publications. You can find more information about northwestern Pennsylvania history by visiting the project website at www.nwpaheritage.org.