Six Radical Thinkers: Bentham, J.S. Mill, Cobden, Carlyle, Mazzini, T.H. Green: Free Audiobook and Listening Guide
Six Radical Thinkers: Bentham, J.S. Mill, Cobden, Carlyle, Mazzini, T.H. Green by John MacCunn: the LibriVox audiobook summary, 25 original MP3 tracks, 8:41:43 running time and a link to listen.