On Feb. 4, Riley will debut his newest work at the Historical Society of Pennsylvania, at 13th and Locust streets, as part of Philagrafika. His subject is Petty’s Island — a 400-acre, fin-shaped piece of land that sits on the Delaware River between Philadelphia and New Jersey. Never heard of it? You should have. It’s a place littered with well-known and colorful characters — Pennsylvania founder William Penn, Venezuelan president Hugo Chavez, a man who declared himself the island’s king, and even the pirate’s pirate himself, Ol’ Blackbeard. It’s been the epicenter of a battle between developers, politicians and environmentalists since 2003. It’s a place that two endangered bald eagles, guarded by the New Jersey Department of Environmental Protection, now call home. And here’s Duke Riley, this rapscallion New Yorker, coming down I-95 to do God knows what with it.