Reports of these briefings made it back to the US agencies and into their locked files, from where a vast amount spilled out when the CIA partly opened its classified doors.
The material about New Zealand bears the hallmarks of what a decently informed observer might produce, assisted by the deep background briefings helpfully provided by senior New Zealand civil servants.
Where information wanders into sensitive areas it remains hidden by redacted boxes. A lot of the almost 4000 pages which relate to New Zealand conceal the most interesting sections, and the file comes stamped 'Sanitized copy approved for release.'
The reports reflect Washington's anxieties and preoccupations: the Red menace, the anti-nuclear passion, left-wing politicians, racial tensions, political currents and references to the CIA's obsession with UFOs, which in New Zealand's case related to the famous 1978 Kaikoura light sightings.
What is not clear from the declassified files is who took the notes in this puzzling case.