Thoughts on the necessity of improving the condition of the slaves in the British colonies with a view to their ultimate emancipation - Clarkson, Thomas 1760-1846 (s.n, 1823)
Goldsmiths'-Kress no. 23972.1. - Includes bibliographical references. - OCLC, 17254477. - Reproduction of original from Kress Library of Business and Economics, Harvard University