Slavery and the internal slave trade in the United States of North America; being replies to questions transmitted by the committee of the British and Foreign Anti-Slavery Society for the abolition of slavery and the slave trade throughout the world. Presented to the General Anti-Slavery Convention, held in London, June, 1840
American Anti-Slavery Society. Executive Committee; British and Foreign Anti-Slavery Society; General Anti-slavery Convention, 1st, London, 1840