Copyright © 1963, 1972 by Murray N. Rothbard Introduction to the Third Edition Copyright © 1975 by Murray N. Rothbard Introduction to the Fourth Edition Copyright © 1983 by Murray N. Rothbard Introduction to the Fifth Edition Copyright © 2000 by The Ludwig von Mises Institute Copyright © 2000 by The Ludwig von Mises Institute All rights reserved. Printed in the United States of America. No part of this book may be reproduced in any manner whatsoever without written permission except in the case of reprints in the context of reviews. For information write The Ludwig von Mises Institute, 518.