The History of the Rise, Progress and Accomplishment of the Abolition of the African Slave-Trade, by the British Parliament (1839)

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

Ismailia

Observations Upon the Windward Coast of Africa The religion, character, customs, &c. of the natives; with a system upon which they may be civilized, and a knowledge attained of the interior of this extraordinary quarter of the globe; and upon the natural and commercial resources of the country; made in the years 1805 and 1806; with an appendix, containing a letter to Lord Howick, on the most simple and effectual means of abolishing the slave trade

Slavery and the slave trade in Africa

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

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