Volunteer PhillyHistory.org geotagger Louis Lescas is an urban historian, map wiz, and human GPS system all wrapped up in one. In this personal essay he shares his love and obsession with hunting locations of old photos for the Philadelphia City Archive

At home in Kensington, Nic Esposito had put off addressing the water leak that was discoloring his wall. But when he finally did, he went literally behind the façade, and in the process became intimate with his home’s history. His column charts a course through the City Archives that any homeowner can use to navigate their own home’s story

The City’s founding paper, the Charter signed by William Penn himself, has recoiled from public view. Sam Robinson tracks it down, and finds out where else it’s been along the way