Cotton is king, and pro-slavery arguments

Studies on Slavery, in Easy Lessons

Three Prize Essays on American Slavery

Slavery and four years of war

A Letter to the Hon. Samuel A. Eliot, Representative in Congress From the City of Boston, In Reply to His Apology For Voting For the Fugitive Slave Bill.

The Great Conspiracy, Volume 3

Discussion on American Slavery

The Slavery Question

Slavery: letters and speeches

Charles Sumner: his complete works, volume 10 (of 20)

The year of jubilee; but not to Africans a discourse, delivered July 4th, 1825, being the 49th anniversary of American independence

Charles Sumner: his complete works, volume 13 (of 20)