| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Mapping Time: The Calendar | 978-0-19-850413-9 (0-19-850413-6) | 1999 |
| Mapping Time: The Calendar and Its History | 978-0-19-286205-1 (0-19-286205-7) | 2000 |
E. G. ?? · E -R · E. Richards · Edward Graham Richards · Edwin Gilmore Richards · G. Richards