Petition denying support for the American Colonization Society, signed by William Wilberforce and 12 others in London, 1833., New-York Historical Society
Notice from the Massachusetts Anti-Slavery Society that they will be sending delegates, William Lloyd Garrison and others, to the General Anti-Slavery Conference in London. Addressed to J. H. Tredgold at the Office of the Anti-Slavery Society [in London]., New-York Historical Society