What books did Thomas write?
• ‘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,’ London, 1786, 8vo; 2nd edition, enlarged, London, 1788, 8vo. • An Essay on the Impolicy of the African Slave Trade’ In two parts. London, 1788, 8vo ; 2 nd ed. London, 1788, 8vo. • ‘An Essay on the Comparative Efficiency of Regulation or Abolition, as applied to the Slave Trade … ‘ London, 1789,8vo. • ‘Letters on the Slave Trade and the State of the Natives in those parts of Africa which are contiguous to Fort St. Louis and Goree, written at Paris in Dec. 1789 and Jan.1790,’ London,1791. • ‘A Portraiture of Quakerism …’ London, 1806, 3 vols. 8vo; 2nd ed., London, 1807, 8vo; 3rd ed., London, 1807, 8vo. Of the first edition of this work 2,500 copies were sold without any public advertisement being issued by the publisher. • ‘Three Letters (one of which has
