Horace Mann's Letters on the Extension of Slavery into California and New Mexico

Speech of Horace Mann, of Massachusetts, in the House of Representatives, Feb. 23, 1849; on Slavery in the United States, and the Slave Trade in the District of Columbia . .

Speech of Hon. Horace Mann, on the Right of Congress to Legislate for the Territories of the United States, and Its Duty to Exclude Slavery Therefrom

Twelve Sermons