http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Speech of Horace Mann, of Massachusetts, on the subject of slavery in the territories, and the consequences of a dissolution of the Union
delivered in the United States House of Representatives, February 15, 1850
Slavery in America and the world: history, culture & law