| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Limbo of the Lost: Actual Stories of Sea Mysteries | 978-0-686-10658-6 | 1973 | |
| No Earthly Explanation | 978-0-552-10071-7 | 1976 | |
| Phenomenon: From Flying Saucers to UFOs - Forty Years of Fact and Research | 978-0-7088-3655-2 | 1988 | Hilary Evans |
| Unidentified Flying Objects, 1947-87: The Forty Year Search for an Explanation | 978-1-870021-02-9 | 1987 | " |
J. S. · J. Spencer · J. W. · J. W. S. · J.W. Spencer · J. Wallace · John S. · John Spencer · John W. · John W. Spencer · John Wallace · W.S. · W. SPENCER
Corgi · French & European Pubns · Futura Publications · TBS The Book Service Ltd