- History and International Relations: From the Ancient World to the 21st Century
- Gentlemen Capitalists: The Social and Political World of the Victorian Businessman
- Agitators and Promoters in the Age of Gladstone and Disraeli: A Biographical Dictionary of the Leaders of British Pressure Groups Founded Between 1865 and 1886
- Transatlantic Culture in the Long Nineteenth Century: Anglo-American Relations and Intertwined Identities (New Approaches to International History)
- Transatlantic Culture in the Long Nineteenth Century: Anglo-American Relations and Intertwined Identities (New Approaches to International History)