1. Abbot, Francis Ellingwood. “The Future of Rationalism.” Index May 29, 1879: 258.
2. -. “Mr. Abbot's New Departure.” Index Apr. 12, 1877: 174.
3. -. “Mrs. Besant, Woman Suffrage, and Christianity.” Index Oct. 7, 1875: 474.
4. -. “Paul Glower: A Rationalistic Story of English and American Life.” Index Dec. 18, 1874: 516.
5. -. “Prospectus.” Index Jan. 1, 1870: 5.