Literatúra faktu
* *Dobrodružstvá duševného detektíva* (1971)
* *Adventures in Psychical Research* (1975)
* *The Mystery of Psychic Healing* (1977)
* *The Psi Factor:A Look at the Evidence for Psychic Phenomena* (1978)
* *The Loch Ness Monster:The Evidence* (1979)
* *Záhada Bermudského trojuholníka* (1979)
* *Fenomén Poltergeist* (1979)
* *The Search for Atlantis* (1979)
* *The UFO Mystery:A Look at the Evidence* (1981)
* *The World's Greatest UFO Mysteries* (1981)
* *The Book of Psychic Phenomena* (1982)
* *The Handbook of Psychic Phenomena* (1983)
* *The Encyclopedia of Psychic Phenomena* (1984)
Beletria
* *The Darkening of the Sun* (1957)
**The Burning Glass* (1958)
* *The Devil's Tide* (1959)
**Čierna smrť* (1960)
* *Veľký mor* (1961)
* *Posledné dni Sodomy a Gomory* (1962)
* *The Ark of the Covenant* (1963)
* *Prekliatie Tutanchamona* (1964)
Tajomstvo Atlantídy (1965)
* *Deň, keď sa zastavila Zem* (1966)
* *Vojna svetov* (1967)
**Stroj času* (1968)
* *20 000 líg pod morom* (1969)
* *Cesta do stredu Zeme* (1970)
* *Návrat Sherlocka Holmesa* (1971)
* *The Hound of the Baskervilles* (1972)
* *Údolie strachu* (1973)
* *Znamenie štyroch* (1974)
**The Scarlet Thread* (1975)
* *Posledné dobrodružstvo Sherlocka Holmesa* (1976)
Poézia
**Do neznáma* (1960)
* *Hlas mora* (1962)
* *The Songs of the Stars* (1964)
* *The Echoes of Eternity* (1966)
* *The Whispers of the Wind* (1970)
* *The Music of the Spheres* (1972)