- Author: R. S. Hadji Author Record # 23966
- Legal Name: Knowlton, Robert
- Language: English
- Used These Alternate Names: Robert Hadji, Robert Knowlton, A Visitor from dim Ultima Thule
- Additional Biographical Data: Bio:R. S. Hadji
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Magazine Editor Series
- Borderland
- 1 Borderland #1 (1984)
- 2 Borderland #2 (1985)
- 3 Borderland #3 (1985)
- 4 Borderland #4 (1986)
- The Shadow Over Providence, or, An Informal Report on the First World Fantasy Convention (1976) [only as by A Visitor from dim Ultima Thule]
- Letter (The Science-Fiction Collector 4) (1977)
- A Checklist of Science Fiction and Fantasy Book Dealers (1983) with David Aylward [only as by David Aylward and Robert Hadji]
- Who's Who in the British Horror Scene (1987)
- Extreme Measures: The Fiction of John Skipp & Craig Spector (1988)
- Profile: David J. Schow (1990)
- A View from the Bridge (1991)
- Out of the Barrens: Two Centuries of Canadian Dark Fantasy & Horror (2009) [only as by Robert Knowlton]
- Hawksmoor (1988) by Peter Ackroyd