JerseyanaReaders of the New Jersey section of the Sunday New York Times eagerly look forward to Marc Mappen's astonishing tales of New Jersey history. Jerseyana is his first collection of these popular monthly columns. Here you will meet villains like Dutch Schultz, the mobster gunned down in a Newark gangland rubout, and heroes like Minerva Miller, a black woman who fought segregation at the turn of the century. There are famous events, like the explosion of