
Philadelphia's population is decimated by an outbreak of yellow fever in 1793. As the city's physicians and civic leaders are fight back, they define our modern conception of public health, and establish some of the city's fundamental institutions that still operate today.
Philadelphia celebrates its founder more than any other American city, but who exactly is William Penn? For many, he is a statue atop City Hall, but Penn's busy life reflected an era of chaotic upheaval and conflict. He is at once a radical Quaker, political prisoner, visionary city planner, absent landlord, and a slaveholder. His ideals, contradictions, and ambitions cast a long shadow across American history.