He won two major history prizes and served as a consultant for filmmaker Ken Burns. His books charted the evolution of the American presidency.

During its years in action, the boat became the backdrop of many pivotal moments. Meet the former 'floating White House' ...

The 31st commander-in-chief lived at the Georgian country house in Walton-on-Thames in Surrey in 1902 when he worked for a ...

President Donald Trump is hoping to revive his 2020 initiative for the “National Garden of American Heroes" and is planning a ...