A Portraiture of Quakerism, Volume 1

The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave-Trade, by the British Parliament

The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave Trade by the British Parliament (1808) / Volume II

The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave Trade by the British Parliament (1808), Volume I

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

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