Communism
- Mazzini. New Haven and London, 1994
- Social Radicalism and the Arts. Western Europe. A Cultural History from the French Revolution to 1968. New York 1970
- The Land Monopoly; The Suffering and Demoralization caused by It, and the Justice & Expediency of its Abolition London 1849/2010
- The Red Republican & The Friend of the People 1850-1851. London, 1967