Fanthorpe, R L
Chronological Checklist
Series – as Lionel Roberts
- Dawn of the Mutants (London: John Spencer and Co/Badger Books, 1959) as by Lionel Roberts
- Time Echo (London: John Spencer and Co/Badger Books, 1959) as by Lionel Roberts
- Cyclops in the Sky (London: John Spencer and Co/Badger Books, 1960) as by Lionel Roberts
- The In-World (London: John Spencer and Co/Badger Books, 1960) as by Lionel Roberts
- The Face of X (London: John Spencer and Co/Badger Books, 1960) as by Lionel Roberts
- The Last Valkyrie (London: John Spencer and Co/Badger Books, 1961) as by Lionel Roberts
- The Synthetic Ones (London: John Spencer and Co/Badger Books, 1961) as by Lionel Roberts
- Flame Goddess (London: John Spencer and Co/Badger Books, 1961) as by Lionel Roberts
- Time Echo (New York: Arcadia House, 1964) as by Robert Lionel
- The Face of X (New York: Arcadia House, 1965) as by Robert Lionel