Cambridge University Press · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Anti-Slavery Cause in America and its Martyrs | 978-1-108-07564-0 (1-108-07564-9) | 2014 |
| The Anti-Slavery Cause in America and Its Martyrs | 978-1-141-10671-4 (1-141-10671-X) | 2009 |