"1846 - 1850" . . . . . . . . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass : on the subject of slavery : delivered in the Senate of the United States, March 1850" . . . . . . . "Speech of the Hon. WM. H. Seward, in the Senate of the United States" . . . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass, on the subject of slavery. Delivered in the Senate of the United States, March 1850"@en . . . . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass, on the subject of slavery delivered in the Senate of the United States, March 1850"@en . . . . . . . . "Speeches"@en . "Speeches" . . . . . . . . . . . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass, on the subject of slavery : Delivered in the Senate of the United States, March, 1850"@en . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass, on the subject of slavery Delivered in the Senate of the United States, March 1850"@en . "Speeches of Hon. William H. Seward, and Hon. Lewis Cass, on the subject of slavery Delivered in the Senate of the United States, March 1850" . "1846 - 1853" . . . . "United States" . . "1850" . . "California" . .