(See Cover)
On the dingy brick wall of No. 9 Grosvenor Square, where London workmen are still repairing blitz damage, there is an inconspicuous blackened plaque: "In this house lived John Adams, first American Minister to Great Britain, May 1785-March 1788, afterwards second President of the United States."
A few yards away, at No. 6, another plaque marks, the bomb-battered, 4½-story mansion where Ambassador Walter Hines Page worked himself to death trying to get the U.S. into World War I. At No. I Grosvenor Square, housed in a massive, brick-faced concrete & steel...