Who wrote the 1967 book "The Death of a President", an account of the assassination of John F. Kennedy?

"The Death of a President: November 20–November 25, 1963" is historian William Manchester's 1967 account of the assassination of John F. Kennedy. The book gained public attention before it was published when Kennedy's widow Jacqueline, who had initially asked Manchester to write the book, demanded that the author make changes in the manuscript.

The book chronicles the long November weekend in 1963 from a small reception the Kennedys hosted in the White House the evening of the trip to Dallas, through the flight and trip to Texas, the motorcade, the assassination, the hospital, the plane trip back to Washington, and the funeral. The friction between the Kennedy and Lyndon B. Johnson factions, the worldwide reaction, and Lee Harvey Oswald's unplanned televised execution by Jack Ruby are all discussed in painstaking detail.