Crisis, Bigger Government, and Ideological Change – By  Robert Higgs

The Search for an Ideal Money by Henry Hazlitt

The Online Library of Liberty has links to the major works of several authors :

Frédéric Bastiat

Richard Cantillon

Frederick Douglass

John Stuart Mill

David Ricardo

Jean-Baptiste Say

Adam Smith

Herbert Spencer

Anne Robert Jacques Turgot

The Online Library of Liberty have links to the works of modern authors:

James Buchanan

Friedrich Hayek

Anthony de Jasay

Israel Kirzner

Deepak Lal

Ludwig von Mises

Gordon Tullock