Letter of David Paul Brown, Esq. to the incorporated "Pennsylvania Society for Promoting the Abolition of Slavery, for the Relief of Free Negroes unlawfully held in bondage, and for Improving the Condition of the African Race." [electronic resource].
Caption title., Letter headed: Philadelphia, March 20, 1860., and AVAILABLE ONLINE TO AUTHORIZED PSU USERS.
Electronic reproduction. Philadelphia, Pa.: NewsBank, inc., 2013. Available via the World Wide Web. Access restricted to Readex Afro-Americana Imprints, 1535-1922: From the Library Company of Philadelphia subscribers.