- The Unsettling of Europe: The Great Migration, 1945 to the Present
- Making of the Modern Refugee
- Russia's First World War: A Social and Economic History
- A Whole Empire Walking: Refugees in Russia During World War I (Indiana-Michigan Series in Russian and East European Studies)
- Government, Industry and Rearmament in Russia, 1900-1914: The Last Argument of Tsarism (Cambridge Russian, Soviet and Post-Soviet Studies)