Speech of Mr. Slade, of Vermont, on the right of petition : the power of Congress to abolish slavery and the slave trade in the District of Columbia : the implied faith of the North and the South to each other in forming the Constitution : and the principles, purposes, and prospects of abolition : delivered in the House of Representatives on the 18th and 20th of January, 1840. - Slade, William (Printed by Gales and Seaton, 1840)