Although Operation Gold was planned by the SIS and the CIA, it was CIA money and manpower that carried it out [citation needed]. Details of the project are still classified, and whatever authoritative information can be found is scant. This is primarily because the then-Director of Central Intelligence, Allen Dulles ordered "as little as possible" be "reduced to writing" when the project was authorized. Operation Gold forms the background to the novels The Innocent by Ian McEwan and Voices Under Berlin: The Tale of a Monterey Mary by T.H.E. Hill.