Saving The Queen by William F. Buckley, Jr. Book

Written in 1976. Has some minor staining on the cover. This is Book one of the Blackford Oakes series.
This novel, set in 1952, reveals Oakes’s childhood and educational background, his recruitment into the CIA, and the Agency’s procedures for “handling” him. His first assignment sends him to Britain, where he must identify (and deal with) a high-level security leak close to the (fictional) British monarch, Queen Caroline. Also, Rufus, the enigmatic genius behind American intelligence operations, is introduced.