Erik Calonius brings to light one of the little known stories of the Civil War period. Built on Long Island, the Wanderer began life as a yacht, but within a year had been outfitted as a slave ship thirty-eight years after slavery was made illegal. Book signing. Free ($5 suggested donation). Melville Gallery (213 Water Street between Fulton & Beekman). For more information call 212.748.8568.