John Murray Publishers Ltd · McGraw-Hill
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Exit Sherlock Holmes: The Great Detective's Final Days | 978-0-7195-3440-9 (0-7195-3440-2) | 1977 |
| The King Edward plot | 978-0-07-025609-5 (0-07-025609-8) | 1980 |
L Hall · Lee Hall · R. Hall · R. L · R. Lee · Robert H. · Robert Hall · Robert L. · Robert L. Hall · Robert Lee