An essay on the impolicy of the African slave trade. [microform] : In two parts. / By the Rev. T. Clarkson, M.A. ; To which is added, an oration, upon the necessity of establishing at Paris, a society to promote the abolition of the trade and slavery of the Negroes. By J.P. Brissot de Warville.
- Philadelphia: : Printed by Francis Bailey, for "The Pennsylvania Society for Promoting the Abolition of Slavery, and the Relief of Free Negroes Unlawfully Held in Bondage.", M,DCC,LXXXVIX. 
, iv, , 4-155,  p. ; 23 cm. (8vo)
- Early American imprints. First series ; no. 21739.