Books by Michels, Robert, Robert Michels, Michels Robert 1876-1936

From the classics, there is Plato's Republic (a critique of tyranny in my view), Robert Michels Political Parties , Tocqueville's Democracy in America (politics as culture), and various Vilfredo Pareto essays, I am no longer sure which volume they are collected in (edited by Finer?).  The Federalist Papers are impressive, but are they impressive to read?