- Explorers of the Infinite: Shapers of Science Fiction
- History of the Movement from 1854 to 1890
- Strange Horizons: The Spectrum of Science Fiction
- SCIENCE FICTION BY GASLIGHT: The Thames Valley Catastrophe; The Doom of London; A Corner in Lightning; The Tilting Island; Finis; An Express of the Future; The Ray of Displacement; Congealing the Ice
- The Immortal Storm: A History of Science Fiction Fandom (Classics of Science Fiction)