Who wrote the book The Challenge to Liberty in which New Deal was described as most stupendous invasion of whole spirit liberty and nation history?

The book "The Challenge to Liberty" was written by Henry Hazlitt. The book was originally published in 1949, and in it, Hazlitt presented his critique of the New Deal, describing it as the "most stupendous invasion of the whole spirit of liberty in the history of the United States." He further argued that the New Deal had not only encroached upon individual liberty but also undermined the principles upon which the American republic had been founded.