Sleve trade. *H.90.81 Remarks on the slave trade. Pub. by the Pennsylvania society for promoting the abolition of slavery, &Ce [Phila., 1879.| Broadside. Pl. Reprinted from the American museum, for May, 1789 [*3203.4. 1789] . An extract from a pamphlet pub. by a society at Plymouth, England and signed W. Elford, chairman.