Socialism
- Social Radicalism and the Arts. Western Europe. A Cultural History from the French Revolution to 1968. New York 1970
- Stuttgart 1919
- The Making of the English Working Class. London 1963
- Geschichte des Sozialismus in England. Stuttgart 1913
- Cartoons for the Cause - Designs and verses for the Socialist and Labour Movement 1886-1896. London 1896 / 1976