One of the greatest scholarly resources on classical liberal and free-market thinking, the Liberty Fund's Online Library of Liberty, has been redesigned. Its purpose: "to provide thousands of titles about individual liberty, limited constitutional government, and the free market, free of charge to the public, for educational purposes."
The author list of its amazing set of full-content books, often available in both HTML and either or both regular .pdf or fascimile edition .pdf, stretches from H.B. Acton to Huldrych Zwingli, and in the middle among the "m"s alone dozens more including Lord Macauley, Moses Maimonides, John Marshall, Carl Menger, Kenneth Minogue, Ludwig von Mises, and Gouverneur Morris.
And it's all fully searchable. A fabulous resource to scholars and historians and just plain readers, to be sure.
My own contribution to contemporary libertarian history, Radicals for Capitalism: A Freewheeling History of the Modern American Libertarian Movement.