""Letter To William K. Seward, Secretary Of State: In Answer To One From Him"" is a historical non-fiction book written by Elias Hasket Derby in 1867. The book is a response to a letter sent by William K. Seward, the Secretary of State at the time, to Derby. The letter discusses various topics such as the reconstruction of the South after the Civil War, the state of foreign relations, and the political climate in America. Derby, a prominent businessman...