Needles, E. (1848). An historical memoir of the Pennsylvania Society, for Promoting the Abolition of Slavery; the Relief of Free Negroes Unlawfully Held in Bondage, and for Improving the Condition of the African Race. Philadelphia: Merrihew and Thompson.

Needles, Edward. An Historical Memoir of the Pennsylvania Society, for Promoting the Abolition of Slavery; the Relief of Free Negroes Unlawfully Held in Bondage, and for Improving the Condition of the African Race. Philadelphia: Merrihew and Thompson, 1848.

Needles, Edward. An Historical Memoir of the Pennsylvania Society, for Promoting the Abolition of Slavery; the Relief of Free Negroes Unlawfully Held in Bondage, and for Improving the Condition of the African Race. Philadelphia: Merrihew and Thompson, 1848.