 | This article needs additional citations for verification. (April 2009) |
The Mainspring of Human Progress, by Henry Grady Weaver, is a libertarian history book published in 1947 by Talbot Books. In 1953, the Foundation for Economic Education printed a revised edition and has done all subsequent printings. The book is an adaptation of the 1943 Rose Wilder Lane book The Discovery of Freedom, rewritten by Weaver.