In 1934, one of those congressmen tipped off the columnists whom MacArthur had sued for libel to the secret apartment he kept for his lover, Isabel Cooper. That MacArthur had already broken up with her made matters worse. She had saved the racy letters he had sent her under the name “Daddy,” and shared them with the reporters, who, in turn, would share them with the world, he knew, unless he ended his lawsuit.
