Pennsylvania society for promoting the abolition of slavery [etc. *H.90,81 Remarks on the slave trade. Pub. by the Pennsylvania society for promoting the abolition of slavery, &c. (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.