| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A History of the County of Essex: Bibliography Supplement | 978-0-19-722770-1 (0-19-722770-8) | 1987 | W. R. Powell · Shirley Durgan |
| A History of the County of Essex: Volume VIII | 978-0-19-722721-3 (0-19-722721-X) | 1983 | W. R. Powell · Norma Knight |