==Bibliography==* Broom of the War God: a novel (1898)* Some Irish problems (1903)* Macedonia: Its Races and Their Future (1906)* Treatment of the Women's Deputations by the police (1911)* The Fruits of our Russian Alliance (1912)* Shelley, Godwin and their Circle (1913)* The War of Steel and Gold: A Study of the Armed Peace (1914)* The Origins of the Great War (1914)* Belgium and "the scrap of paper (1915)* A League of Nations (1917)* A Share In Your Motherland and other articles (1918)* Covenant of peace; an essay on the league of nations (1919) with an introduction by Herbert Croly.
* The Broom of the War God (1898)* Macedonia: Its Races and Their Future (1906)* Adventures in Prose (1911)* Shelley, Godwin and his Circle (1913)* Report of the International Commission to Inquire into the Causes and Conduct of the Balkan Wars (1914)* War of Steel and Gold (1914)* Origins of the Great War (1914)* Belgium and the Scrap of Paper (1915)* A League of Nations (1917)* The War of Steel and Gold: A Study of the Armed Peace (1918)* Across the Blockade (1919)* After the Peace (1920)* The Russian Workers' Republic (1921)* How the Soviets Work (1927)* Olives of Endless Age (1928)* Rebel India (1931)* Property or Peace?