| A Portraiture of Quakerism, Volume 1: Taken from a View of the Education and Discipline, Social Manners, Civil and Political Economy, Religious Principles and Character, of the Society of Friends | English | March 4, 2005 |
| A Portraiture of Quakerism, Volume 2: Taken from a View of the Education and Discipline, Social Manners, Civil and Political Economy, Religious Principles and Character, of the Society of Friends | English | March 4, 2005 |
| A Portraiture of Quakerism, Volume 3: Taken from a View of the Education and Discipline, Social Manners, Civil and Political Economy, Religious Principles and Character, of the Society of Friends | English | March 9, 2005 |
| An Essay on the Slavery and Commerce of the Human Species, Particularly the African: Translated from a Latin Dissertation, Which Was Honoured with the First Prize in the University of Cambridge, for the Year 1785, with Additions | English | January 1, 2004 |
| The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave Trade by the British Parliament (1808), Volume I | English | May 1, 2004 |
| The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave Trade by the British Parliament (1808), Volume II | English | June 1, 2004 |
| The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave-Trade, by the British Parliament (1839) | English | January 1, 2004 |
| Thoughts on the Necessity of Improving the Condition of the Slaves in the British Colonies: With a View to Their Ultimate Emancipation; and on the Practicability, the Safety, and the Advantages of the Latter Measure. | English | December 1, 2003 |