"Ambiguities of Free Labor Revisited," the lecture Barry Cushman delivered on April 14, 2010 to inaugurate the James Monroe Distinguished Professorship at the University of Virginia Law School, is now available as a YouTube video
here and as an audio podcast from the University of Virginia's site on iTunes U. Dean Paul Mahoney's introduction provides a succinct precis of Professor Cushman's prior scholarship on the constitutional history of the twentieth-century United States.