The Life And Letters Of John Hay V2 is a book written by William Roscoe Thayer. It is a comprehensive biography of John Hay, an American statesman, diplomat, and writer who served as private secretary to Abraham Lincoln and later as Secretary of State under Presidents William McKinley and Theodore Roosevelt. The book is divided into two volumes, with the second volume covering the latter part of Hay's life and career. Thayer's biography is based on...