Lawrence Ferlinghetti's name does not appear in any First Amendment treatise or casebook. And yet when the best-selling poet and proprietor of City Lights Books was indicted under California law for publishing and selling Allen Ginsberg's poem, Howl, Ferglinghetti buttressed the tradition of dissident expression and ended an era when minds were still closed, candid literature still taboo, and when selling banned books was considered a crime. The...