- E-bookThe Planet Mars and Its Inhabitants, a psychic revelationEros Urides
- E-bookThe Planet Mars and Its Inhabitants, a Psychic RevelationJ. L. Kennon
- E-bookThe Planet Mars and Its Inhabitants, a Psychic RevelationJ. L. Kennon
- E-bookThe Planet Mars & Its InhabitantsJ. L. Kennon
- E-bookThe Planet Mars and Its InhabitantsEros Urides
- E-bookThe Planet Mars and Its Inhabitants, a Psychic RevelationJ. L. Kennon