- "Scientific Humanism" (1898)
- "The New Socialism" (1899)
- "Socialism and Democracy in Europe" (1907)
- "As I Knew Them: Presidents and Politics From Grant to Coolidge" (1927)
Fiction Books:
- "On the Threshold of Life" (1889)
- "The Death-Wake" (1891)
- "The Story of a Thousand" (1892)
- "The Despot of Scia" (1894)