Carey, M., & Mercer, C. F. (1832). Letters on the Colonization Society: With a view of its probable results ; under the following heads ; the origin of the Society ; increase of the coloured population ; manumission of slaves in this country ; declarations of legislatures, and other assembled bodies, in favor of the society ; situation of the colonists at Monrovia and other towns ; moral and religious character of the settlers; soil, climate, productions, and commerce of Liberia ... addressed to Charles F. Mercer, M.H.R.U.S (3rd ed., enl. and improved.). Philadelphia: Young, Printer.

Carey, Mathew, and Charles Fenton Mercer. Letters On the Colonization Society: With a View of Its Probable Results ; Under the Following Heads ; the Origin of the Society ; Increase of the Coloured Population ; Manumission of Slaves in This Country ; Declarations of Legislatures, and Other Assembled Bodies, in Favor of the Society ; Situation of the Colonists At Monrovia and Other Towns ; Moral and Religious Character of the Settlers; Soil, Climate, Productions, and Commerce of Liberia ... Addressed to Charles F. Mercer, M.H.R.U.S. 3rd ed., enl. and improved. Philadelphia: Young, Printer, 1832.

Carey, Mathew, and Charles Fenton Mercer. Letters On the Colonization Society: With a View of Its Probable Results ; Under the Following Heads ; the Origin of the Society ; Increase of the Coloured Population ; Manumission of Slaves in This Country ; Declarations of Legislatures, and Other Assembled Bodies, in Favor of the Society ; Situation of the Colonists At Monrovia and Other Towns ; Moral and Religious Character of the Settlers; Soil, Climate, Productions, and Commerce of Liberia ... Addressed to Charles F. Mercer, M.H.R.U.S. 3rd ed., enl. and improved. Philadelphia: Young, Printer, 1832.